Mercurial > octave
annotate liboctave/util/oct-inttypes.h @ 22022:278fc29b69ca
maint: Eliminate unnecessary double newline blocks (only whitespace changes).
* Figure.cc, annotation-dialog.cc, dialog.cc, dialog.h, files-dock-widget.cc,
find-files-dialog.cc, find-files-model.cc, file-editor-tab.cc, file-editor.cc,
find-dialog.cc, octave-qscintilla.cc, octave-txt-lexer.cc, main-window.cc,
main-window.h, octave-cmd.cc, octave-cmd.h, octave-dock-widget.cc,
octave-qt-link.cc, parser.h, webinfo.cc, settings-dialog.cc,
shortcut-manager.cc, shortcut-manager.h, welcome-wizard.cc, workspace-model.cc,
__ilu__.cc, __lin_interpn__.cc, besselj.cc, bsxfun.cc, cellfun.cc, conv2.cc,
data.cc, debug.cc, debug.h, dynamic-ld.cc, fft2.cc, file-io.cc,
ft-text-renderer.cc, gl-render.cc, gl2ps-print.cc, graphics.cc, graphics.in.h,
help.cc, jit-typeinfo.cc, jit-typeinfo.h, kron.cc, ls-ascii-helper.cc,
ls-hdf5.cc, ls-hdf5.h, ls-mat5.cc, max.cc, oct-map.cc, oct-map.h,
oct-stream.cc, octave-link.h, pr-output.cc, pt-jit.cc, qz.cc, sparse-xdiv.cc,
sparse-xpow.cc, strfind.cc, strfns.cc, symtab.h, toplev.cc, toplev.h,
typecast.cc, utils.cc, variables.cc, xdiv.h, xpow.cc, xpow.h, zfstream.cc,
__eigs__.cc, __init_fltk__.cc, audioread.cc, ccolamd.cc, chol.cc, qr.cc,
ov-base-diag.cc, ov-base-int.cc, ov-base-sparse.cc, ov-base.cc, ov-base.h,
ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc,
ov-bool.h, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-class.cc, ov-class.h,
ov-classdef.cc, ov-complex.cc, ov-complex.h, ov-cs-list.cc, ov-cs-list.h,
ov-cx-diag.cc, ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc,
ov-cx-sparse.h, ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.h, ov-fcn-inline.h,
ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h,
ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h,
ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-int16.cc,
ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-intx.h, ov-lazy-idx.cc, ov-lazy-idx.h,
ov-mex-fcn.h, ov-null-mat.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h,
ov-re-diag.cc, ov-re-diag.h, ov-re-mat.cc, ov-re-sparse.cc, ov-re-sparse.h,
ov-scalar.cc, ov-scalar.h, ov-str-mat.h, ov-struct.cc, ov-struct.h,
ov-type-conv.h, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc,
ov-usr-fcn.cc, ov-usr-fcn.h, ov.h, op-cm-m.cc, op-fcm-fm.cc, op-fm-fm.cc,
op-int.h, op-m-m.cc, op-pm-template.cc, pt-binop.h, pt-select.cc, pt-stmt.cc,
pt-unop.h, Array-util.cc, Array.cc, Array.h, CColVector.cc, CMatrix.cc,
CMatrix.h, CSparse.cc, MArray.cc, MSparse.cc, MatrixType.cc, PermMatrix.cc,
Range.cc, Sparse-C.cc, Sparse.cc, dMatrix.cc, dim-vector.h, fCColVector.cc,
fCMatrix.cc, fMatrix.cc, fMatrix.h, idx-vector.cc, idx-vector.h, blaswrap.c,
f77-fcn.h, DASPK.cc, eigs-base.cc, hess.cc, lo-specfun.cc, oct-fftw.cc,
oct-norm.cc, oct-rand.cc, oct-rand.h, qr.cc, qrp.cc, randmtzig.cc,
randpoisson.cc, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, Sparse-op-defs.h,
mx-inlines.cc, oct-env.h, cmd-edit.cc, f2c-main.c, lo-array-errwarn.cc,
lo-array-errwarn.h, lo-array-gripes.cc, lo-array-gripes.h, lo-ieee.h,
lo-regexp.cc, oct-binmap.h, oct-inttypes.cc, oct-inttypes.h, oct-sort.cc,
oct-sort.h, mkoctfile.in.cc:
maint: Eliminate unnecessary double newline blocks (only whitespace changes).
author | Rik <rik@octave.org> |
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date | Fri, 01 Jul 2016 19:48:35 -0700 |
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4902 | 1 /* |
2 | |
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3 Copyright (C) 2004-2015 John W. Eaton |
11523 | 4 Copyright (C) 2008-2009 Jaroslav Hajek |
4902 | 5 |
6 This file is part of Octave. | |
7 | |
8 Octave is free software; you can redistribute it and/or modify it | |
9 under the terms of the GNU General Public License as published by the | |
7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
11 option) any later version. | |
4902 | 12 |
13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
20 <http://www.gnu.org/licenses/>. | |
4902 | 21 |
22 */ | |
23 | |
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24 #if ! defined (octave_oct_inttypes_h) |
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25 #define octave_oct_inttypes_h 1 |
4902 | 26 |
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27 #include "octave-config.h" |
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28 |
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29 #include <cstdlib> |
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4902 | 31 #include <limits> |
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32 #include <iosfwd> |
4902 | 33 |
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34 #include "lo-traits.h" |
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35 #include "lo-math.h" |
4969 | 36 #include "lo-mappers.h" |
4902 | 37 |
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38 template <typename T> class octave_int; |
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39 |
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40 typedef octave_int<int8_t> octave_int8; |
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41 typedef octave_int<int16_t> octave_int16; |
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42 typedef octave_int<int32_t> octave_int32; |
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43 typedef octave_int<int64_t> octave_int64; |
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44 |
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45 typedef octave_int<uint8_t> octave_uint8; |
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46 typedef octave_int<uint16_t> octave_uint16; |
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47 typedef octave_int<uint32_t> octave_uint32; |
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48 typedef octave_int<uint64_t> octave_uint64; |
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49 |
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50 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
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51 |
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52 namespace octave |
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53 { |
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54 namespace math |
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55 { |
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56 inline long double round (long double x) { return roundl (x); } |
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57 |
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58 inline long double isnan (long double x) { return isnan (static_cast<double> (x)); } |
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59 } |
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60 } |
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61 |
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62 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) |
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63 |
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64 OCTAVE_DEPRECATED ("use 'octave::math::isnan' instead") |
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65 inline long double xround (long double x) { return octave::math::round (x); } |
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66 |
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67 OCTAVE_DEPRECATED ("use 'octave::math::isnan' instead") |
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68 inline bool xisnan (long double x) { return octave::math::isnan (x); } |
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69 |
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70 #endif |
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71 |
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72 #endif |
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73 |
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74 // FIXME: we define this by our own because some compilers, such as |
8333 | 75 // MSVC, do not provide std::abs (int64_t) and std::abs (uint64_t). In |
76 // the future, it should go away in favor of std::abs. | |
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77 template <typename T> |
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78 inline T octave_int_abs (T x) { return x >= 0 ? x : -x; } |
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79 |
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80 // Query for an integer type of certain sizeof, and signedness. |
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81 template <int qsize, bool qsigned> |
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82 struct query_integer_type |
4902 | 83 { |
84 public: | |
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85 static const bool registered = false; |
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86 typedef void type; // Void shall result in a compile-time error if we |
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87 // attempt to use it in computations. |
4902 | 88 }; |
89 | |
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90 #define REGISTER_INT_TYPE(TYPE) \ |
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91 template <> \ |
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92 class query_integer_type<sizeof (TYPE), std::numeric_limits<TYPE>::is_signed> \ |
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93 { \ |
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94 public: \ |
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95 static const bool registered = true; \ |
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96 typedef TYPE type; \ |
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97 } |
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98 |
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99 // No two registered integers can share sizeof and signedness. |
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100 REGISTER_INT_TYPE (int8_t); |
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101 REGISTER_INT_TYPE (uint8_t); |
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102 REGISTER_INT_TYPE (int16_t); |
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103 REGISTER_INT_TYPE (uint16_t); |
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104 REGISTER_INT_TYPE (int32_t); |
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105 REGISTER_INT_TYPE (uint32_t); |
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106 REGISTER_INT_TYPE (int64_t); |
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107 REGISTER_INT_TYPE (uint64_t); |
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108 |
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109 // Rationale: Comparators have a single static method, rel(), that returns the |
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110 // result of the binary relation. They also have two static boolean fields: |
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111 // ltval, gtval determine the value of x OP y if x < y, x > y, respectively. |
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112 #define REGISTER_OCTAVE_CMP_OP(NM,OP) \ |
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113 class NM \ |
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114 { \ |
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115 public: \ |
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116 static const bool ltval = (0 OP 1); \ |
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117 static const bool gtval = (1 OP 0); \ |
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118 template <typename T> \ |
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119 static bool op (T x, T y) { return x OP y; } \ |
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120 } |
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121 |
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122 // We also provide two special relations: ct, yielding always true, and cf, |
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123 // yielding always false. |
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124 #define REGISTER_OCTAVE_CONST_OP(NM,value) \ |
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125 class NM \ |
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126 { \ |
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127 public: \ |
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128 static const bool ltval = value; \ |
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129 static const bool gtval = value; \ |
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130 template <typename T> \ |
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131 static bool op (T, T) { return value; } \ |
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132 } |
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134 // Handles non-homogeneous integer comparisons. Avoids doing useless tests. |
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135 class octave_int_cmp_op |
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136 { |
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137 // This determines a suitable promotion type for T1 when meeting T2 in a |
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138 // binary relation. If promotion to int or T2 is safe, it is used. |
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139 // Otherwise, the signedness of T1 is preserved and it is widened if T2 is |
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140 // wider. |
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141 // Notice that if this is applied to both types, they must end up with equal |
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142 // size. |
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143 template <typename T1, typename T2> |
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144 class prom |
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145 { |
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146 // Promote to int? |
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147 static const bool pint = (sizeof (T1) < sizeof (int) |
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148 && sizeof (T2) < sizeof (int)); |
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149 static const bool t1sig = std::numeric_limits<T1>::is_signed; |
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150 static const bool t2sig = std::numeric_limits<T2>::is_signed; |
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151 static const bool psig = |
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152 (pint || (sizeof (T2) > sizeof (T1) && t2sig) || t1sig); |
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153 static const int psize = |
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154 (pint ? sizeof (int) : (sizeof (T2) > sizeof (T1) |
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155 ? sizeof (T2) : sizeof (T1))); |
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156 public: |
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157 typedef typename query_integer_type<psize, psig>::type type; |
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158 }; |
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160 // Implements comparisons between two types of equal size but |
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161 // possibly different signedness. |
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162 template <typename xop, int size> |
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163 class uiop |
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164 { |
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165 typedef typename query_integer_type<size, false>::type utype; |
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166 typedef typename query_integer_type<size, true>::type stype; |
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167 public: |
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168 static bool op (utype x, utype y) |
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169 { return xop::op (x, y); } |
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170 static bool op (stype x, stype y) |
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171 { return xop::op (x, y); } |
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172 static bool op (stype x, utype y) |
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173 { return (x < 0) ? xop::ltval : xop::op (static_cast<utype> (x), y); } |
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174 static bool op (utype x, stype y) |
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175 { return (y < 0) ? xop::gtval : xop::op (x, static_cast<utype> (y)); } |
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176 }; |
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178 public: |
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179 REGISTER_OCTAVE_CMP_OP (lt, <); |
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180 REGISTER_OCTAVE_CMP_OP (le, <=); |
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181 REGISTER_OCTAVE_CMP_OP (gt, >); |
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182 REGISTER_OCTAVE_CMP_OP (ge, >=); |
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183 REGISTER_OCTAVE_CMP_OP (eq, ==); |
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184 REGISTER_OCTAVE_CMP_OP (ne, !=); |
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185 REGISTER_OCTAVE_CONST_OP (ct, true); |
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186 REGISTER_OCTAVE_CONST_OP (cf, false); |
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187 |
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188 // Universal comparison operation. |
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189 template <typename xop, typename T1, typename T2> |
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190 static bool |
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191 op (T1 x, T2 y) |
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192 { |
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193 typedef typename prom<T1, T2>::type PT1; |
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194 typedef typename prom<T2, T1>::type PT2; |
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195 return uiop<xop, sizeof (PT1)>::op (static_cast<PT1> (x), |
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196 static_cast<PT2> (y)); |
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197 } |
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198 |
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199 public: |
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200 |
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201 // Mixed comparisons |
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202 template <typename xop, typename T> |
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203 static bool |
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204 mop (T x, double y) |
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205 { return xop::op (static_cast<double> (x), y); } |
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206 |
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207 template <typename xop, typename T> |
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208 static bool |
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209 mop (double x, T y) |
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210 { return xop::op (x, static_cast<double> (y)); } |
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211 |
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212 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
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213 # define DECLARE_EXTERNAL_LONG_DOUBLE_CMP_OPS(T) \ |
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214 template <typename xop> static OCTAVE_API bool \ |
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215 external_mop (double, T); \ |
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216 template <typename xop> static OCTAVE_API bool \ |
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217 external_mop (T, double) |
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218 |
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219 DECLARE_EXTERNAL_LONG_DOUBLE_CMP_OPS (int64_t); |
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220 DECLARE_EXTERNAL_LONG_DOUBLE_CMP_OPS (uint64_t); |
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221 #endif |
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222 |
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223 // Typecasting to doubles won't work properly for 64-bit integers -- |
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224 // they lose precision. |
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225 // If we have long doubles, use them... |
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226 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
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227 # if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
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228 # define DEFINE_LONG_DOUBLE_CMP_OP(T) \ |
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229 template <typename xop> \ |
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230 static bool \ |
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231 mop (double x, T y) \ |
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232 { \ |
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233 return external_mop<xop> (x, y); \ |
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234 } \ |
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235 template <typename xop> \ |
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236 static bool \ |
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237 mop (T x, double y) \ |
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238 { \ |
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239 return external_mop<xop> (x, y); \ |
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240 } |
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241 # else |
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242 # define DEFINE_LONG_DOUBLE_CMP_OP(T) \ |
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243 template <typename xop> \ |
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244 static bool \ |
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245 mop (double x, T y) \ |
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246 { \ |
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247 return xop::op (static_cast<long double> (x), \ |
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248 static_cast<long double> (y)); \ |
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249 } \ |
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250 template <typename xop> \ |
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251 static bool \ |
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252 mop (T x, double y) \ |
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253 { \ |
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254 return xop::op (static_cast<long double> (x), \ |
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255 static_cast<long double> (y)); \ |
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256 } |
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257 # endif |
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258 #else |
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259 // ... otherwise, use external handlers |
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260 |
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261 // FIXME: We could declare directly the mop methods as external, |
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262 // but we can't do this because bugs in gcc (<= 4.3) prevent |
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263 // explicit instantiations later in that case. |
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264 # define DEFINE_LONG_DOUBLE_CMP_OP(T) \ |
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265 template <typename xop> static OCTAVE_API bool \ |
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266 emulate_mop (double, T); \ |
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267 template <typename xop> \ |
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268 static bool \ |
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269 mop (double x, T y) \ |
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270 { \ |
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271 return emulate_mop<xop> (x, y); \ |
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272 } \ |
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273 template <typename xop> static OCTAVE_API bool \ |
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274 emulate_mop (T, double); \ |
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275 template <typename xop> \ |
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276 static bool \ |
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277 mop (T x, double y) \ |
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278 { \ |
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279 return emulate_mop<xop> (x, y); \ |
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280 } |
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281 #endif |
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282 |
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283 DEFINE_LONG_DOUBLE_CMP_OP(int64_t) |
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284 DEFINE_LONG_DOUBLE_CMP_OP(uint64_t) |
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285 |
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286 #undef DEFINE_LONG_DOUBLE_CMP_OP |
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287 }; |
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288 |
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289 // Base integer class. No data, just conversion methods and exception flags. |
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290 template <typename T> |
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291 class octave_int_base |
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292 { |
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293 public: |
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294 |
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295 static T min_val () { return std::numeric_limits<T>:: min (); } |
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296 static T max_val () { return std::numeric_limits<T>:: max (); } |
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298 // Convert integer value. |
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299 template <typename S> |
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300 static T |
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301 truncate_int (const S& value) |
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302 { |
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303 // An exhaustive test whether the max and/or min check can be omitted. |
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304 static const bool t_is_signed = std::numeric_limits<T>::is_signed; |
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305 static const bool s_is_signed = std::numeric_limits<S>::is_signed; |
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306 static const int t_size = sizeof (T); |
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307 static const int s_size = sizeof (S); |
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308 |
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309 static const bool omit_chk_min = |
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310 (! s_is_signed || (t_is_signed && t_size >= s_size)); |
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311 static const bool omit_chk_max = |
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312 (t_size > s_size || (t_size == s_size |
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313 && (! t_is_signed || s_is_signed))); |
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314 // If the check can be omitted, substitute constant false relation. |
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315 typedef octave_int_cmp_op::cf cf; |
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316 typedef octave_int_cmp_op::lt lt; |
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317 typedef octave_int_cmp_op::gt gt; |
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318 typedef typename if_then_else<omit_chk_min, cf, lt>::result chk_min; |
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319 typedef typename if_then_else<omit_chk_max, cf, gt>::result chk_max; |
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321 // Efficiency of the following depends on inlining and dead code |
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322 // elimination, but that should be a piece of cake for most compilers. |
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323 if (chk_min::op (value, static_cast<S> (min_val ()))) |
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324 { |
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325 return min_val (); |
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326 } |
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327 else if (chk_max::op (value, static_cast<S> (max_val ()))) |
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328 { |
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329 return max_val (); |
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330 } |
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331 else |
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332 return static_cast<T> (value); |
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333 } |
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335 private: |
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336 |
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337 // Computes a real-valued threshold for a max/min check. |
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338 template <typename S> |
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339 static S |
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340 compute_threshold (S val, T orig_val) |
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341 { |
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342 val = octave::math::round (val); // Fool optimizations (maybe redundant) |
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343 // If val is even, but orig_val is odd, we're one unit off. |
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344 if (orig_val % 2 && val / 2 == octave::math::round (val / 2)) |
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345 // FIXME: is this always correct? |
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346 val *= (static_cast<S> (1) - (std::numeric_limits<S>::epsilon () / 2)); |
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347 return val; |
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348 } |
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349 |
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350 public: |
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351 |
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352 // Convert a real number (check NaN and non-int). |
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353 template <typename S> |
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354 static T |
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355 convert_real (const S& value); |
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356 }; |
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357 |
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358 // Saturated (homogeneous) integer arithmetics. The signed and unsigned |
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359 // implementations are significantly different, so we implement another layer |
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360 // and completely specialize. Arithmetics inherits from octave_int_base so |
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361 // that it can use its exceptions and truncation functions. |
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362 |
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363 template <typename T, bool is_signed> |
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364 class octave_int_arith_base |
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365 { }; |
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366 |
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367 // Unsigned arithmetics. C++ standard requires it to be modular, so the |
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368 // overflows can be handled efficiently and reliably. |
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369 template <typename T> |
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370 class octave_int_arith_base<T, false> : octave_int_base<T> |
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371 { |
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372 public: |
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373 |
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374 static T |
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375 abs (T x) { return x; } |
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376 |
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377 static T |
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378 signum (T x) { return x ? static_cast<T> (1) : static_cast<T> (0); } |
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379 |
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380 // Shifts do not overflow. |
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381 static T |
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382 rshift (T x, int n) { return x >> n; } |
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383 |
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384 static T |
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385 lshift (T x, int n) { return x << n; } |
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386 |
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387 static T |
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388 minus (T) |
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389 { |
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390 return static_cast<T> (0); |
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391 } |
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392 |
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393 // the overflow behavior for unsigned integers is guaranteed by C/C++, |
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394 // so the following should always work. |
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395 static T |
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396 add (T x, T y) |
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397 { |
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398 T u = x + y; |
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399 if (u < x) |
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400 { |
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401 u = octave_int_base<T>::max_val (); |
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402 } |
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403 return u; |
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404 } |
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405 |
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406 static T |
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407 sub (T x, T y) |
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408 { |
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409 T u = x - y; |
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410 if (u > x) |
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411 { |
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412 u = 0; |
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413 } |
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414 return u; |
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415 } |
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416 |
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417 // Multiplication is done using promotion to wider integer type. If there is |
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418 // no suitable promotion type, this operation *MUST* be specialized. |
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419 static T mul (T x, T y) { return mul_internal (x, y); } |
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420 |
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421 static T |
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422 mul_internal (T x, T y) |
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423 { |
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424 // Promotion type for multiplication (if exists). |
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425 typedef typename query_integer_type<2*sizeof (T), false>::type mptype; |
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426 return octave_int_base<T>::truncate_int (static_cast<mptype> (x) |
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427 * static_cast<mptype> (y)); |
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428 } |
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429 |
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430 // Division with rounding to nearest. Note that / and % are probably |
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431 // computed by a single instruction. |
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432 static T |
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433 div (T x, T y) |
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434 { |
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435 if (y != 0) |
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436 { |
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437 T z = x / y; |
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438 T w = x % y; |
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439 if (w >= y-w) z += 1; |
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440 return z; |
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441 } |
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442 else |
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443 { |
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444 return x ? octave_int_base<T>::max_val () : 0; |
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445 } |
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446 } |
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447 |
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448 // Remainder. |
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449 static T |
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450 rem (T x, T y) |
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451 { |
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452 return y != 0 ? x % y : 0; |
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453 } |
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454 |
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455 // Modulus. Note the weird y = 0 case for Matlab compatibility. |
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456 static T |
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457 mod (T x, T y) |
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458 { |
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459 return y != 0 ? x % y : x; |
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460 } |
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461 }; |
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462 |
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463 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
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464 |
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465 // Handle 64-bit multiply using long double |
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466 |
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467 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
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468 |
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469 extern OCTAVE_API uint64_t |
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470 octave_external_uint64_uint64_mul (uint64_t, uint64_t); |
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471 |
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472 #endif |
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473 |
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474 template <> |
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475 inline uint64_t |
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476 octave_int_arith_base<uint64_t, false>::mul_internal (uint64_t x, uint64_t y) |
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477 { |
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478 uint64_t retval; |
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479 |
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480 long double p = static_cast<long double> (x) * static_cast<long double> (y); |
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481 |
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482 if (p > static_cast<long double> (octave_int_base<uint64_t>::max_val ())) |
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483 retval = octave_int_base<uint64_t>::max_val (); |
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484 else |
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485 retval = static_cast<uint64_t> (p); |
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486 |
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487 return retval; |
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488 } |
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489 |
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490 template <> |
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491 inline uint64_t |
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492 octave_int_arith_base<uint64_t, false>::mul (uint64_t x, uint64_t y) |
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493 { |
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494 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
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495 return octave_external_uint64_uint64_mul (x, y); |
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496 #else |
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497 return mul_internal (x, y); |
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498 #endif |
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499 } |
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500 |
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501 #else |
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502 |
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503 // Special handler for 64-bit integer multiply. |
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504 template <> |
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505 OCTAVE_API uint64_t |
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506 octave_int_arith_base<uint64_t, false>::mul_internal (uint64_t, uint64_t); |
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507 |
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508 #endif |
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509 |
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510 // Signed integer arithmetic. |
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511 // |
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512 // Rationale: If OCTAVE_HAVE_FAST_INT_OPS is defined, the following |
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513 // conditions should hold: |
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514 // |
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515 // 1. Signed numbers are represented by twos complement (see |
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516 // <http://en.wikipedia.org/wiki/Two%27s_complement>) |
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517 // |
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518 // 2. static_cast to unsigned int counterpart works like |
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519 // interpreting the signed bit pattern as unsigned (and is thus |
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520 // zero-cost). |
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521 // |
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522 // 3. Signed addition and subtraction yield the same bit results as |
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523 // unsigned. (We use casts to prevent optimization interference, |
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524 // so there is no need for things like -ftrapv). |
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525 // |
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526 // 4. Bit operations on signed integers work like on unsigned |
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527 // integers, except for the shifts. Shifts are arithmetic. |
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528 // |
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529 // The above conditions are satisfied by most modern platforms. If |
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530 // OCTAVE_HAVE_FAST_INT_OPS is defined, bit tricks and wraparound |
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531 // arithmetics are used to avoid conditional jumps as much as |
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532 // possible, thus being friendly to modern pipeline processor |
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533 // architectures. Otherwise, we fall back to a bullet-proof code that |
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534 // only uses assumptions guaranteed by the standard. |
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535 |
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536 template <typename T> |
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537 class octave_int_arith_base<T, true> : octave_int_base<T> |
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538 { |
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539 // The corresponding unsigned type. |
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540 typedef typename query_integer_type<sizeof (T), false>::type UT; |
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541 public: |
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542 |
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543 // Returns 1 for negative number, 0 otherwise. |
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544 static T |
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545 __signbit (T x) |
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546 { |
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547 #if defined (OCTAVE_HAVE_FAST_INT_OPS) |
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548 return static_cast<UT> (x) >> std::numeric_limits<T>::digits; |
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549 #else |
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550 return (x < 0) ? 1 : 0; |
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551 #endif |
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552 } |
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553 |
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554 static T |
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555 abs (T x) |
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556 { |
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557 #if defined (OCTAVE_HAVE_FAST_INT_OPS) |
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558 // This is close to how GCC does std::abs, but we can't just use std::abs, |
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559 // because its behavior for INT_MIN is undefined and the compiler could |
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560 // discard the following test. |
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561 T m = x >> std::numeric_limits<T>::digits; |
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562 T y = (x ^ m) - m; |
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563 if (y < 0) |
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564 { |
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565 y = octave_int_base<T>::max_val (); |
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566 } |
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567 return y; |
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568 #else |
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569 // -INT_MAX is safe because C++ actually allows only three implementations |
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570 // of integers: sign & magnitude, ones complement and twos complement. |
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571 // The first test will, with modest optimizations, evaluate at compile |
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572 // time, and maybe eliminate the branch completely. |
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573 T y; |
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574 if (octave_int_base<T>::min_val () < -octave_int_base<T>::max_val () |
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575 && x == octave_int_base<T>::min_val ()) |
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576 { |
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577 y = octave_int_base<T>::max_val (); |
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578 } |
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579 else |
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580 y = (x < 0) ? -x : x; |
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581 return y; |
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582 #endif |
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583 } |
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584 |
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|
585 static T |
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|
586 signum (T x) |
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587 { |
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|
588 // With modest optimizations, this will compile without a jump. |
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589 return ((x > 0) ? 1 : 0) - __signbit (x); |
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590 } |
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591 |
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592 // FIXME: we do not have an authority what signed shifts should |
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593 // exactly do, so we define them the easy way. Note that Matlab does |
8333 | 594 // not define signed shifts. |
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595 |
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596 static T |
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597 rshift (T x, int n) { return x >> n; } |
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598 |
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599 static T |
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600 lshift (T x, int n) { return x << n; } |
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601 |
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602 // Minus has problems similar to abs. |
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603 static T |
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604 minus (T x) |
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605 { |
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606 #if defined (OCTAVE_HAVE_FAST_INT_OPS) |
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607 T y = -x; |
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608 if (y == octave_int_base<T>::min_val ()) |
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609 { |
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610 --y; |
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611 } |
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|
612 return y; |
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613 #else |
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|
614 T y; |
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Rik <rik@octave.org>
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615 if (octave_int_base<T>::min_val () < -octave_int_base<T>::max_val () |
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616 && x == octave_int_base<T>::min_val ()) |
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|
617 { |
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|
618 y = octave_int_base<T>::max_val (); |
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|
619 } |
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|
620 else |
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621 y = -x; |
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622 return y; |
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|
623 #endif |
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|
624 } |
7521
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avoid some GCC warnings for unsigned comparisons
John W. Eaton <jwe@octave.org>
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7503
diff
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|
625 |
11586
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John W. Eaton <jwe@octave.org>
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|
626 static T |
8169
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|
627 add (T x, T y) |
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|
628 { |
21302
8376de2eaf00
define OCTAVE_HAVE_FAST_INT_OPS in octave-config.h
John W. Eaton <jwe@octave.org>
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|
629 #if defined (OCTAVE_HAVE_FAST_INT_OPS) |
8169
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|
630 // The typecasts do nothing, but they are here to prevent an optimizing |
21751
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Rik <rik@octave.org>
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21724
diff
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|
631 // compiler from interfering. Also, the signed operations on small types |
8169
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|
632 // actually return int. |
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|
633 T u = static_cast<UT> (x) + static_cast<UT> (y); |
18084
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Rik <rik@octave.org>
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18017
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|
634 T ux = u ^ x; |
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Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
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diff
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|
635 T uy = u ^ y; |
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|
636 if ((ux & uy) < 0) |
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|
637 { |
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|
638 u = octave_int_base<T>::max_val () + __signbit (~u); |
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|
639 } |
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parents:
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|
640 return u; |
8169
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|
641 #else |
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|
642 // We shall carefully avoid anything that may overflow. |
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|
643 T u; |
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|
644 if (y < 0) |
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|
645 { |
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|
646 if (x < octave_int_base<T>::min_val () - y) |
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|
647 { |
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|
648 u = octave_int_base<T>::min_val (); |
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|
649 } |
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|
650 else |
49a5a4be04a1
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parents:
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|
651 u = x + y; |
49a5a4be04a1
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17744
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|
652 } |
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|
653 else |
49a5a4be04a1
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17744
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|
654 { |
49a5a4be04a1
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changeset
|
655 if (x > octave_int_base<T>::max_val () - y) |
49a5a4be04a1
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parents:
17744
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changeset
|
656 { |
49a5a4be04a1
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changeset
|
657 u = octave_int_base<T>::max_val (); |
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17744
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|
658 } |
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parents:
17744
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|
659 else |
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parents:
17744
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changeset
|
660 u = x + y; |
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17744
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|
661 } |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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|
662 |
17769
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|
663 return u; |
8169
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rewrite integer arithmetics and conversions
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parents:
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|
664 #endif |
17769
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|
665 } |
8169
66bc6f9b4f72
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|
666 |
66bc6f9b4f72
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Jaroslav Hajek <highegg@gmail.com>
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8104
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changeset
|
667 // This is very similar to addition. |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
668 static T |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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changeset
|
669 sub (T x, T y) |
17769
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Rik <rik@octave.org>
parents:
17744
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|
670 { |
21302
8376de2eaf00
define OCTAVE_HAVE_FAST_INT_OPS in octave-config.h
John W. Eaton <jwe@octave.org>
parents:
21245
diff
changeset
|
671 #if defined (OCTAVE_HAVE_FAST_INT_OPS) |
8169
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Jaroslav Hajek <highegg@gmail.com>
parents:
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|
672 // The typecasts do nothing, but they are here to prevent an optimizing |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21724
diff
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|
673 // compiler from interfering. Also, the signed operations on small types |
8169
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Jaroslav Hajek <highegg@gmail.com>
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|
674 // actually return int. |
17769
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17744
diff
changeset
|
675 T u = static_cast<UT> (x) - static_cast<UT> (y); |
18084
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Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
18017
diff
changeset
|
676 T ux = u ^ x; |
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
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18017
diff
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|
677 T uy = u ^ ~y; |
17769
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|
678 if ((ux & uy) < 0) |
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|
679 { |
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parents:
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|
680 u = octave_int_base<T>::max_val () + __signbit (~u); |
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|
681 } |
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diff
changeset
|
682 return u; |
8169
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|
683 #else |
17769
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17744
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changeset
|
684 // We shall carefully avoid anything that may overflow. |
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17744
diff
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|
685 T u; |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
686 if (y < 0) |
49a5a4be04a1
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17744
diff
changeset
|
687 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
688 if (x > octave_int_base<T>::max_val () + y) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
689 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
690 u = octave_int_base<T>::max_val (); |
49a5a4be04a1
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parents:
17744
diff
changeset
|
691 } |
49a5a4be04a1
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parents:
17744
diff
changeset
|
692 else |
49a5a4be04a1
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parents:
17744
diff
changeset
|
693 u = x - y; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
694 } |
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17744
diff
changeset
|
695 else |
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17744
diff
changeset
|
696 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
697 if (x < octave_int_base<T>::min_val () + y) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
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parents:
17744
diff
changeset
|
698 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
699 u = octave_int_base<T>::min_val (); |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
700 } |
49a5a4be04a1
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parents:
17744
diff
changeset
|
701 else |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
702 u = x - y; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
703 } |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
parents:
8104
diff
changeset
|
704 |
17769
49a5a4be04a1
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Rik <rik@octave.org>
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|
705 return u; |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
706 #endif |
17769
49a5a4be04a1
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Rik <rik@octave.org>
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17744
diff
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|
707 } |
8169
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
changeset
|
708 |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21724
diff
changeset
|
709 // Multiplication is done using promotion to wider integer type. If there is |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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11523
diff
changeset
|
710 // no suitable promotion type, this operation *MUST* be specialized. |
17993
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
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diff
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|
711 static T mul (T x, T y) { return mul_internal (x, y); } |
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
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diff
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|
712 |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
713 static T |
17993
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
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diff
changeset
|
714 mul_internal (T x, T y) |
17769
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Rik <rik@octave.org>
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17744
diff
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|
715 { |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
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|
716 // Promotion type for multiplication (if exists). |
49a5a4be04a1
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Rik <rik@octave.org>
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diff
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|
717 typedef typename query_integer_type<2*sizeof (T), true>::type mptype; |
49a5a4be04a1
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Rik <rik@octave.org>
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|
718 return octave_int_base<T>::truncate_int (static_cast<mptype> (x) |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
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|
719 * static_cast<mptype> (y)); |
49a5a4be04a1
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Rik <rik@octave.org>
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|
720 } |
8169
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|
721 |
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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|
722 // Division. |
11586
12df7854fa7c
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John W. Eaton <jwe@octave.org>
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|
723 static T |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
724 div (T x, T y) |
17769
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
725 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
726 T z; |
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Rik <rik@octave.org>
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17744
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changeset
|
727 if (y == 0) |
49a5a4be04a1
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Rik <rik@octave.org>
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17744
diff
changeset
|
728 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
729 if (x < 0) |
49a5a4be04a1
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Rik <rik@octave.org>
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diff
changeset
|
730 z = octave_int_base<T>::min_val (); |
49a5a4be04a1
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Rik <rik@octave.org>
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|
731 else if (x != 0) |
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Rik <rik@octave.org>
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|
732 z = octave_int_base<T>::max_val (); |
49a5a4be04a1
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|
733 else |
49a5a4be04a1
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parents:
17744
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changeset
|
734 z = 0; |
49a5a4be04a1
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17744
diff
changeset
|
735 } |
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17744
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changeset
|
736 else if (y < 0) |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
737 { |
49a5a4be04a1
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17744
diff
changeset
|
738 // This is a special case that overflows as well. |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
739 if (y == -1 && x == octave_int_base<T>::min_val ()) |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
740 { |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
parents:
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changeset
|
741 z = octave_int_base<T>::max_val (); |
17769
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|
742 } |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
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diff
changeset
|
743 else |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
744 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
745 z = x / y; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
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17744
diff
changeset
|
746 // Can't overflow, but std::abs (x) can! |
49a5a4be04a1
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Rik <rik@octave.org>
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17744
diff
changeset
|
747 T w = -octave_int_abs (x % y); |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
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diff
changeset
|
748 if (w <= y - w) |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
749 z -= 1 - (__signbit (x) << 1); |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
750 } |
49a5a4be04a1
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parents:
17744
diff
changeset
|
751 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
752 else |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
753 { |
49a5a4be04a1
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parents:
17744
diff
changeset
|
754 z = x / y; |
49a5a4be04a1
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Rik <rik@octave.org>
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17744
diff
changeset
|
755 // FIXME: this is a workaround due to MSVC's absence of |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
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changeset
|
756 // std::abs (int64_t). The call to octave_int_abs can't |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
757 // overflow, but std::abs (x) can! |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
758 T w = octave_int_abs (x % y); |
8333 | 759 |
17769
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Rik <rik@octave.org>
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changeset
|
760 if (w >= y - w) |
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17744
diff
changeset
|
761 z += 1 - (__signbit (x) << 1); |
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parents:
17744
diff
changeset
|
762 } |
49a5a4be04a1
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17744
diff
changeset
|
763 return z; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
764 } |
8169
66bc6f9b4f72
rewrite integer arithmetics and conversions
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parents:
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changeset
|
765 |
10436
00219bdd2d17
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Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
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|
766 // Remainder. |
00219bdd2d17
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Jaroslav Hajek <highegg@gmail.com>
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|
767 static T |
00219bdd2d17
implement built-in rem and mod
Jaroslav Hajek <highegg@gmail.com>
parents:
10405
diff
changeset
|
768 rem (T x, T y) |
17769
49a5a4be04a1
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parents:
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diff
changeset
|
769 { |
49a5a4be04a1
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Rik <rik@octave.org>
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17744
diff
changeset
|
770 return y != 0 ? x % y : 0; |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
771 } |
10436
00219bdd2d17
implement built-in rem and mod
Jaroslav Hajek <highegg@gmail.com>
parents:
10405
diff
changeset
|
772 |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21724
diff
changeset
|
773 // Modulus. Note the weird y = 0 case for Matlab compatibility. |
10436
00219bdd2d17
implement built-in rem and mod
Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
changeset
|
774 static T |
00219bdd2d17
implement built-in rem and mod
Jaroslav Hajek <highegg@gmail.com>
parents:
10405
diff
changeset
|
775 mod (T x, T y) |
17769
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
776 { |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
777 if (y != 0) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
778 { |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
779 T r = x % y; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
780 return ((r < 0) != (y < 0)) ? r + y : r; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
781 } |
49a5a4be04a1
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parents:
17744
diff
changeset
|
782 else |
49a5a4be04a1
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parents:
17744
diff
changeset
|
783 return x; |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
784 } |
7521
6f10bbb2854a
avoid some GCC warnings for unsigned comparisons
John W. Eaton <jwe@octave.org>
parents:
7503
diff
changeset
|
785 }; |
6f10bbb2854a
avoid some GCC warnings for unsigned comparisons
John W. Eaton <jwe@octave.org>
parents:
7503
diff
changeset
|
786 |
21724
aba2e6293dd8
use "#if ..." consistently instead of "#ifdef" and "#ifndef"
John W. Eaton <jwe@octave.org>
parents:
21574
diff
changeset
|
787 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
17993
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
788 |
8185
69c5cce38c29
implement 64-bit arithmetics
Jaroslav Hajek <highegg@gmail.com>
parents:
8169
diff
changeset
|
789 // Handle 64-bit multiply using long double |
17993
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
parents:
17980
diff
changeset
|
790 |
21724
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use "#if ..." consistently instead of "#ifdef" and "#ifndef"
John W. Eaton <jwe@octave.org>
parents:
21574
diff
changeset
|
791 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
17993
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avoid including gnulib header in installed Octave header file (bug #40607)
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diff
changeset
|
792 |
ac9fd5010620
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parents:
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diff
changeset
|
793 extern OCTAVE_API int64_t |
ac9fd5010620
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changeset
|
794 octave_external_int64_int64_mul (int64_t, int64_t); |
ac9fd5010620
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changeset
|
795 |
ac9fd5010620
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diff
changeset
|
796 #endif |
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avoid including gnulib header in installed Octave header file (bug #40607)
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|
797 |
8185
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Jaroslav Hajek <highegg@gmail.com>
parents:
8169
diff
changeset
|
798 template <> |
69c5cce38c29
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Jaroslav Hajek <highegg@gmail.com>
parents:
8169
diff
changeset
|
799 inline int64_t |
17993
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John W. Eaton <jwe@octave.org>
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|
800 octave_int_arith_base<int64_t, true>::mul_internal (int64_t x, int64_t y) |
8185
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Jaroslav Hajek <highegg@gmail.com>
parents:
8169
diff
changeset
|
801 { |
17993
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John W. Eaton <jwe@octave.org>
parents:
17980
diff
changeset
|
802 int64_t retval; |
17980
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
parents:
17822
diff
changeset
|
803 |
8185
69c5cce38c29
implement 64-bit arithmetics
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
804 long double p = static_cast<long double> (x) * static_cast<long double> (y); |
17980
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avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
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diff
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|
805 |
21302
8376de2eaf00
define OCTAVE_HAVE_FAST_INT_OPS in octave-config.h
John W. Eaton <jwe@octave.org>
parents:
21245
diff
changeset
|
806 // NOTE: We could maybe do it with a single branch if |
8376de2eaf00
define OCTAVE_HAVE_FAST_INT_OPS in octave-config.h
John W. Eaton <jwe@octave.org>
parents:
21245
diff
changeset
|
807 // OCTAVE_HAVE_FAST_INT_OPS, but it would require one more runtime |
8376de2eaf00
define OCTAVE_HAVE_FAST_INT_OPS in octave-config.h
John W. Eaton <jwe@octave.org>
parents:
21245
diff
changeset
|
808 // conversion, so the question is whether it would really be faster. |
8185
69c5cce38c29
implement 64-bit arithmetics
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
809 if (p > static_cast<long double> (octave_int_base<int64_t>::max_val ())) |
17980
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
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17822
diff
changeset
|
810 retval = octave_int_base<int64_t>::max_val (); |
8185
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implement 64-bit arithmetics
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
811 else if (p < static_cast<long double> (octave_int_base<int64_t>::min_val ())) |
17980
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
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changeset
|
812 retval = octave_int_base<int64_t>::min_val (); |
8185
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implement 64-bit arithmetics
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diff
changeset
|
813 else |
17980
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
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17822
diff
changeset
|
814 retval = static_cast<int64_t> (p); |
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
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diff
changeset
|
815 |
824c05a6d3ec
avoid errors for int64 ops implemented with long double (bug #40607)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
816 return retval; |
8185
69c5cce38c29
implement 64-bit arithmetics
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
817 } |
17993
ac9fd5010620
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diff
changeset
|
818 |
ac9fd5010620
avoid including gnulib header in installed Octave header file (bug #40607)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
819 template <> |
ac9fd5010620
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John W. Eaton <jwe@octave.org>
parents:
17980
diff
changeset
|
820 inline int64_t |
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821 octave_int_arith_base<int64_t, true>::mul (int64_t x, int64_t y) |
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822 { |
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823 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
17993
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824 return octave_external_int64_int64_mul (x, y); |
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825 #else |
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826 return mul_internal (x, y); |
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|
827 #endif |
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828 } |
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829 |
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830 #else |
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831 |
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832 // Special handler for 64-bit integer multiply. |
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833 template <> |
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834 OCTAVE_API int64_t |
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835 octave_int_arith_base<int64_t, true>::mul_internal (int64_t, int64_t); |
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836 |
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837 #endif |
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838 |
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839 // This class simply selects the proper arithmetics. |
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840 template <typename T> |
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841 class octave_int_arith |
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842 : public octave_int_arith_base<T, std::numeric_limits<T>::is_signed> |
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843 { }; |
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844 |
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845 template <typename T> |
4902 | 846 class |
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847 octave_int : public octave_int_base<T> |
4902 | 848 { |
849 public: | |
4943 | 850 typedef T val_type; |
851 | |
4902 | 852 octave_int (void) : ival () { } |
853 | |
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854 octave_int (T i) : ival (i) { } |
4902 | 855 |
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856 #if defined (OCTAVE_HAVE_OVERLOAD_CHAR_INT8_TYPES) |
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857 // Always treat characters as unsigned. |
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858 octave_int (char c) |
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859 : ival (octave_int_base<T>::truncate_int (static_cast<unsigned char> (c))) |
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860 { } |
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861 #endif |
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862 |
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863 octave_int (double d) : ival (octave_int_base<T>::convert_real (d)) { } |
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864 |
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865 octave_int (float d) : ival (octave_int_base<T>::convert_real (d)) { } |
6402 | 866 |
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867 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
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868 octave_int (long double d) : ival (octave_int_base<T>::convert_real (d)) { } |
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869 #endif |
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870 |
4902 | 871 octave_int (bool b) : ival (b) { } |
872 | |
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873 template <typename U> |
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874 octave_int (const U& i) : ival(octave_int_base<T>::truncate_int (i)) { } |
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875 |
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|
876 template <typename U> |
4902 | 877 octave_int (const octave_int<U>& i) |
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878 : ival (octave_int_base<T>::truncate_int (i.value ())) { } |
4902 | 879 |
880 octave_int (const octave_int<T>& i) : ival (i.ival) { } | |
881 | |
882 octave_int& operator = (const octave_int<T>& i) | |
883 { | |
884 ival = i.ival; | |
885 return *this; | |
886 } | |
887 | |
888 T value (void) const { return ival; } | |
889 | |
4949 | 890 const unsigned char * iptr (void) const |
891 { return reinterpret_cast<const unsigned char *> (& ival); } | |
892 | |
4902 | 893 bool operator ! (void) const { return ! ival; } |
894 | |
7198 | 895 bool bool_value (void) const { return static_cast<bool> (value ()); } |
896 | |
897 char char_value (void) const { return static_cast<char> (value ()); } | |
898 | |
899 double double_value (void) const { return static_cast<double> (value ()); } | |
900 | |
901 float float_value (void) const { return static_cast<float> (value ()); } | |
902 | |
7177 | 903 operator T (void) const { return value (); } |
904 | |
7198 | 905 // char and bool operators intentionally omitted. |
5533 | 906 |
7198 | 907 operator double (void) const { return double_value (); } |
4902 | 908 |
7198 | 909 operator float (void) const { return float_value (); } |
5030 | 910 |
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911 octave_int<T> |
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|
912 operator + () const |
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913 { return *this; } |
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914 |
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915 // unary operators & mappers |
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916 #define OCTAVE_INT_UN_OP(OPNAME,NAME) \ |
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917 inline octave_int<T> \ |
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|
918 OPNAME () const \ |
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|
919 { return octave_int_arith<T>::NAME (ival); } |
4902 | 920 |
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921 OCTAVE_INT_UN_OP(operator -, minus) |
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922 OCTAVE_INT_UN_OP(abs, abs) |
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923 OCTAVE_INT_UN_OP(signum, signum) |
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|
924 |
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|
925 #undef OCTAVE_INT_UN_OP |
4902 | 926 |
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|
927 // Homogeneous binary integer operations. |
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|
928 #define OCTAVE_INT_BIN_OP(OP, NAME, ARGT) \ |
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929 inline octave_int<T> \ |
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|
930 operator OP (const ARGT& y) const \ |
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931 { return octave_int_arith<T>::NAME (ival, y); } \ |
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|
932 inline octave_int<T>& \ |
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|
933 operator OP##= (const ARGT& y) \ |
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934 { \ |
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935 ival = octave_int_arith<T>::NAME (ival, y); \ |
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|
936 return *this; \ |
4952 | 937 } |
938 | |
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939 OCTAVE_INT_BIN_OP(+, add, octave_int<T>) |
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940 OCTAVE_INT_BIN_OP(-, sub, octave_int<T>) |
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941 OCTAVE_INT_BIN_OP(*, mul, octave_int<T>) |
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942 OCTAVE_INT_BIN_OP(/, div, octave_int<T>) |
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943 OCTAVE_INT_BIN_OP(%, rem, octave_int<T>) |
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944 OCTAVE_INT_BIN_OP(<<, lshift, int) |
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945 OCTAVE_INT_BIN_OP(>>, rshift, int) |
4952 | 946 |
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|
947 #undef OCTAVE_INT_BIN_OP |
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|
948 |
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|
949 static octave_int<T> min (void) { return std::numeric_limits<T>::min (); } |
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950 static octave_int<T> max (void) { return std::numeric_limits<T>::max (); } |
4906 | 951 |
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|
952 static int nbits (void) { return std::numeric_limits<T>::digits; } |
4909 | 953 |
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3d8ace26c5b4
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|
954 static int byte_size (void) { return sizeof (T); } |
4949 | 955 |
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956 static const char *type_name (); |
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957 |
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958 // The following are provided for convenience. |
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959 static const octave_int zero, one; |
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960 |
5900 | 961 // Unsafe. This function exists to support the MEX interface. |
962 // You should not use it anywhere else. | |
963 void *mex_get_data (void) const { return const_cast<T *> (&ival); } | |
964 | |
4902 | 965 private: |
966 | |
967 T ival; | |
968 }; | |
969 | |
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970 template <typename T> |
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971 inline octave_int<T> |
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972 rem (const octave_int<T>& x, const octave_int<T>& y) |
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973 { return octave_int_arith<T>::rem (x.value (), y.value ()); } |
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974 |
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975 template <typename T> |
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976 inline octave_int<T> |
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977 mod (const octave_int<T>& x, const octave_int<T>& y) |
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978 { return octave_int_arith<T>::mod (x.value (), y.value ()); } |
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979 |
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980 // No mixed integer binary operations! |
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|
981 |
21782
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982 namespace octave |
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|
983 { |
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|
984 namespace math |
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|
985 { |
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986 template <typename T> |
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987 bool |
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988 isnan (const octave_int<T>&) |
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989 { |
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990 return false; |
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|
991 } |
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992 } |
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|
993 } |
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|
994 |
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|
995 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) |
2aef506f3fec
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|
996 |
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|
997 template <typename T> |
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998 OCTAVE_DEPRECATED ("use 'octave::math::isnan' instead") |
2aef506f3fec
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|
999 bool |
2aef506f3fec
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|
1000 xisnan (const octave_int<T>& x) |
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|
1001 { |
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diff
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|
1002 return octave::math::isnan (x); |
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|
1003 } |
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|
1004 |
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|
1005 #endif |
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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|
1006 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
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17744
diff
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|
1007 // FIXME: can/should any of these be inline? |
7997
2b8952e133c9
implement checked conversions between integers
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|
1008 |
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|
1009 template <typename T> |
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|
1010 extern OCTAVE_API octave_int<T> |
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|
1011 pow (const octave_int<T>&, const octave_int<T>&); |
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|
1012 |
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|
1013 template <typename T> |
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|
1014 extern OCTAVE_API octave_int<T> |
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|
1015 pow (const double& a, const octave_int<T>& b); |
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rewrite integer arithmetics and conversions
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|
1016 |
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|
1017 template <typename T> |
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|
1018 extern OCTAVE_API octave_int<T> |
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|
1019 pow (const octave_int<T>& a, const double& b); |
7922
935be827eaf8
error for NaN values in & and | expressions
John W. Eaton <jwe@octave.org>
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diff
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|
1020 |
21139
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|
1021 template <typename T> |
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|
1022 extern OCTAVE_API octave_int<T> |
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Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff
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|
1023 pow (const float& a, const octave_int<T>& b); |
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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|
1024 |
21139
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|
1025 template <typename T> |
13012
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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|
1026 extern OCTAVE_API octave_int<T> |
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff
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|
1027 pow (const octave_int<T>& a, const float& b); |
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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|
1028 |
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff
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|
1029 // FIXME: Do we really need a differently named single-precision |
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Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
parents:
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diff
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|
1030 // function integer power function here instead of an overloaded |
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff
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|
1031 // one? |
21139
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20791
diff
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|
1032 template <typename T> |
13012
15eefbd9d4e8
Implement a few missing automatic bsxfun power operators
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff
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|
1033 extern OCTAVE_API octave_int<T> |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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|
1034 powf (const float& a, const octave_int<T>& b); |
4952 | 1035 |
21139
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John W. Eaton <jwe@octave.org>
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|
1036 template <typename T> |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1037 extern OCTAVE_API octave_int<T> |
66bc6f9b4f72
rewrite integer arithmetics and conversions
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diff
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|
1038 powf (const octave_int<T>& a, const float& b); |
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|
1039 |
66bc6f9b4f72
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diff
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|
1040 // Binary relations |
4953 | 1041 |
8169
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rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1042 #define OCTAVE_INT_CMP_OP(OP, NAME) \ |
21139
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consistently use "typename" intead of "class" in template declarations
John W. Eaton <jwe@octave.org>
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|
1043 template <typename T1, typename T2> \ |
8169
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
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|
1044 inline bool \ |
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1045 operator OP (const octave_int<T1>& x, const octave_int<T2>& y) \ |
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1046 { return octave_int_cmp_op::op<octave_int_cmp_op::NAME, T1, T2> \ |
66bc6f9b4f72
rewrite integer arithmetics and conversions
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1047 (x.value (), y.value ()); } |
66bc6f9b4f72
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Jaroslav Hajek <highegg@gmail.com>
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diff
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|
1048 |
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|
1049 OCTAVE_INT_CMP_OP (<, lt) |
66bc6f9b4f72
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|
1050 OCTAVE_INT_CMP_OP (<=, le) |
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diff
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|
1051 OCTAVE_INT_CMP_OP (>, gt) |
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diff
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|
1052 OCTAVE_INT_CMP_OP (>=, ge) |
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|
1053 OCTAVE_INT_CMP_OP (==, eq) |
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1054 OCTAVE_INT_CMP_OP (!=, ne) |
66bc6f9b4f72
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|
1055 |
8185
69c5cce38c29
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diff
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|
1056 #undef OCTAVE_INT_CMP_OP |
4953 | 1057 |
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|
1058 template <typename T> |
8169
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rewrite integer arithmetics and conversions
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|
1059 inline std::ostream& |
4902 | 1060 operator << (std::ostream& os, const octave_int<T>& ival) |
1061 { | |
1062 os << ival.value (); | |
1063 return os; | |
1064 } | |
1065 | |
21139
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John W. Eaton <jwe@octave.org>
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|
1066 template <typename T> |
8169
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|
1067 inline std::istream& |
4902 | 1068 operator >> (std::istream& is, octave_int<T>& ival) |
1069 { | |
1070 T tmp = 0; | |
1071 is >> tmp; | |
1072 ival = tmp; | |
1073 return is; | |
1074 } | |
1075 | |
18252
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Jordi Gutiérrez Hermoso <jordigh@octave.org>
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diff
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|
1076 // We need to specialise for char and unsigned char because |
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|
1077 // std::operator<< and std::operator>> are overloaded to input and |
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|
1078 // output the ASCII character values instead of a representation of |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21724
diff
changeset
|
1079 // their numerical value (e.g., os << char(10) outputs a space instead |
18252
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1080 // of outputting the characters '1' and '0') |
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1081 |
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|
1082 template <> |
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|
1083 inline std::ostream& |
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|
1084 operator << (std::ostream& os, const octave_int<int8_t>& ival) |
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|
1085 { |
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|
1086 os << static_cast<int> (ival.value ()); |
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|
1087 return os; |
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1088 } |
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|
1089 |
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|
1090 template <> |
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|
1091 inline std::ostream& |
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|
1092 operator << (std::ostream& os, const octave_int<uint8_t>& ival) |
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|
1093 { |
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|
1094 os << static_cast<unsigned int> (ival.value ()); |
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|
1095 return os; |
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|
1096 } |
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|
1097 |
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|
1098 template <> |
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|
1099 inline std::istream& |
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1100 operator >> (std::istream& is, octave_int<int8_t>& ival) |
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1101 { |
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|
1102 int tmp = 0; |
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1103 is >> tmp; |
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|
1104 ival = static_cast<int8_t> (tmp); |
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|
1105 return is; |
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1106 } |
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1107 |
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|
1108 template <> |
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Jordi Gutiérrez Hermoso <jordigh@octave.org>
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|
1109 inline std::istream& |
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1110 operator >> (std::istream& is, octave_int<uint8_t>& ival) |
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|
1111 { |
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|
1112 unsigned int tmp = 0; |
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Jordi Gutiérrez Hermoso <jordigh@octave.org>
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|
1113 is >> tmp; |
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|
1114 ival = static_cast<uint8_t> (tmp); |
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|
1115 return is; |
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1116 } |
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|
1117 |
8169
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1118 // Bitwise operations |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
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1119 |
4906 | 1120 #define OCTAVE_INT_BITCMP_OP(OP) \ |
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John W. Eaton <jwe@octave.org>
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1121 template <typename T> \ |
4906 | 1122 octave_int<T> \ |
1123 operator OP (const octave_int<T>& x, const octave_int<T>& y) \ | |
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1124 { return x.value () OP y.value (); } |
4906 | 1125 |
1126 OCTAVE_INT_BITCMP_OP (&) | |
1127 OCTAVE_INT_BITCMP_OP (|) | |
1128 OCTAVE_INT_BITCMP_OP (^) | |
1129 | |
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1130 #undef OCTAVE_INT_BITCMP_OP |
4906 | 1131 |
8169
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1132 // General bit shift. |
21139
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1133 template <typename T> |
4909 | 1134 octave_int<T> |
4920 | 1135 bitshift (const octave_int<T>& a, int n, |
10312
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John W. Eaton <jwe@octave.org>
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|
1136 const octave_int<T>& mask = std::numeric_limits<T>::max ()) |
4909 | 1137 { |
1138 if (n > 0) | |
4952 | 1139 return (a << n) & mask; |
4909 | 1140 else if (n < 0) |
4952 | 1141 return (a >> -n) & mask; |
4909 | 1142 else |
8963
d1eab3ddb02d
oct-inttypes.h (bitshift): apply mask even if not shifting
John W. Eaton <jwe@octave.org>
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|
1143 return a & mask; |
4909 | 1144 } |
1145 | |
21724
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1146 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
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1147 |
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1148 #define DECLARE_EXTERNAL_LONG_DOUBLE_OP(T, OP) \ |
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1149 extern OCTAVE_API T \ |
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1150 external_double_ ## T ## _ ## OP (double x, T y); \ |
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1151 extern OCTAVE_API T \ |
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1152 external_ ## T ## _double_ ## OP (T x, double y) |
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1153 |
18017
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1154 #define DECLARE_EXTERNAL_LONG_DOUBLE_OPS(T) \ |
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1155 DECLARE_EXTERNAL_LONG_DOUBLE_OP (T, add); \ |
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|
1156 DECLARE_EXTERNAL_LONG_DOUBLE_OP (T, sub); \ |
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|
1157 DECLARE_EXTERNAL_LONG_DOUBLE_OP (T, mul); \ |
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1158 DECLARE_EXTERNAL_LONG_DOUBLE_OP (T, div) |
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1159 |
18005
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1160 DECLARE_EXTERNAL_LONG_DOUBLE_OPS (octave_int64); |
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1161 DECLARE_EXTERNAL_LONG_DOUBLE_OPS (octave_uint64); |
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1162 |
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1163 #endif |
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1164 |
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1165 #define OCTAVE_INT_DOUBLE_BIN_OP0(OP) \ |
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|
1166 template <typename T> \ |
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1167 inline octave_int<T> \ |
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1168 operator OP (const octave_int<T>& x, const double& y) \ |
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1169 { return octave_int<T> (static_cast<double> (x) OP y); } \ |
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1170 template <typename T> \ |
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1171 inline octave_int<T> \ |
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1172 operator OP (const double& x, const octave_int<T>& y) \ |
19861
19755f4fc851
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Rik <rik@octave.org>
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1173 { return octave_int<T> (x OP static_cast<double> (y)); } |
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1174 |
21724
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1175 #if defined (OCTAVE_INT_USE_LONG_DOUBLE) |
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1176 // Handle mixed op using long double |
21724
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1177 #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) |
21202
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1178 # define OCTAVE_INT_DOUBLE_BIN_OP(OP, NAME) \ |
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1179 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \ |
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1180 template <> \ |
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1181 inline octave_int64 \ |
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1182 operator OP (const double& x, const octave_int64& y) \ |
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1183 { \ |
18017
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1184 return external_double_octave_int64_ ## NAME (x, y); \ |
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1185 } \ |
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1186 template <> \ |
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1187 inline octave_uint64 \ |
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1188 operator OP (const double& x, const octave_uint64& y) \ |
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1189 { \ |
18017
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1190 return external_double_octave_uint64_ ## NAME (x, y); \ |
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1191 } \ |
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1192 template <> \ |
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1193 inline octave_int64 \ |
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1194 operator OP (const octave_int64& x, const double& y) \ |
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1195 { \ |
18017
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1196 return external_octave_int64_double_ ## NAME (x, y); \ |
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1197 } \ |
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1198 template <> \ |
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1199 inline octave_uint64 \ |
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1200 operator OP (const octave_uint64& x, const double& y) \ |
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1201 { \ |
18017
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1202 return external_octave_uint64_double_ ## NAME (x, y); \ |
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1203 } |
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1204 #else |
21202
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1205 # define OCTAVE_INT_DOUBLE_BIN_OP(OP, NAME) \ |
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1206 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \ |
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1207 template <> \ |
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1208 inline octave_int64 \ |
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1209 operator OP (const double& x, const octave_int64& y) \ |
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1210 { \ |
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1211 return octave_int64 (x OP static_cast<long double> (y.value ())); \ |
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1212 } \ |
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1213 template <> \ |
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1214 inline octave_uint64 \ |
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1215 operator OP (const double& x, const octave_uint64& y) \ |
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1216 { \ |
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1217 return octave_uint64 (x OP static_cast<long double> (y.value ())); \ |
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1218 } \ |
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1219 template <> \ |
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1220 inline octave_int64 \ |
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1221 operator OP (const octave_int64& x, const double& y) \ |
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1222 { \ |
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1223 return octave_int64 (static_cast<long double> (x.value ()) OP y); \ |
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1224 } \ |
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1225 template <> \ |
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|
1226 inline octave_uint64 \ |
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|
1227 operator OP (const octave_uint64& x, const double& y) \ |
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1228 { \ |
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1229 return octave_uint64 (static_cast<long double> (x.value ()) OP y); \ |
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|
1230 } |
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|
1231 #endif |
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1232 #else |
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1233 // external handlers |
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1234 #define OCTAVE_INT_DOUBLE_BIN_OP(OP, NAME) \ |
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1235 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \ |
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1236 template <> \ |
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1237 OCTAVE_API octave_int64 \ |
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1238 operator OP (const double&, const octave_int64&); \ |
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1239 template <> \ |
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1240 OCTAVE_API octave_uint64 \ |
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1241 operator OP (const double&, const octave_uint64&); \ |
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1242 template <> \ |
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1243 OCTAVE_API octave_int64 \ |
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1244 operator OP (const octave_int64&, const double&); \ |
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1245 template <> \ |
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1246 OCTAVE_API octave_uint64 \ |
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1247 operator OP (const octave_uint64&, const double&); |
5072 | 1248 |
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1249 #endif |
5072 | 1250 |
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1251 OCTAVE_INT_DOUBLE_BIN_OP (+, add) |
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1252 OCTAVE_INT_DOUBLE_BIN_OP (-, sub) |
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1253 OCTAVE_INT_DOUBLE_BIN_OP (*, mul) |
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|
1254 OCTAVE_INT_DOUBLE_BIN_OP (/, div) |
5072 | 1255 |
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1256 #undef OCTAVE_INT_DOUBLE_BIN_OP0 |
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1257 #undef OCTAVE_INT_DOUBLE_BIN_OP |
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1258 #undef DECLARE_EXTERNAL_LONG_DOUBLE_OP |
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1259 #undef DECLARE_EXTERNAL_LONG_DOUBLE_OPS |
5072 | 1260 |
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1261 #define OCTAVE_INT_DOUBLE_CMP_OP(OP,NAME) \ |
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1262 template <typename T> \ |
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1263 inline bool \ |
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|
1264 operator OP (const octave_int<T>& x, const double& y) \ |
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1265 { return octave_int_cmp_op::mop<octave_int_cmp_op::NAME> (x.value (), y); } \ |
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1266 template <typename T> \ |
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1267 inline bool \ |
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1268 operator OP (const double& x, const octave_int<T>& y) \ |
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1269 { return octave_int_cmp_op::mop<octave_int_cmp_op::NAME> (x, y.value ()); } |
5072 | 1270 |
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1271 OCTAVE_INT_DOUBLE_CMP_OP (<, lt) |
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|
1272 OCTAVE_INT_DOUBLE_CMP_OP (<=, le) |
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1273 OCTAVE_INT_DOUBLE_CMP_OP (>=, ge) |
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1274 OCTAVE_INT_DOUBLE_CMP_OP (>, gt) |
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|
1275 OCTAVE_INT_DOUBLE_CMP_OP (==, eq) |
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|
1276 OCTAVE_INT_DOUBLE_CMP_OP (!=, ne) |
5072 | 1277 |
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1278 #undef OCTAVE_INT_DOUBLE_CMP_OP |
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1279 |
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1280 // Floats are handled by simply converting to doubles. |
5072 | 1281 |
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|
1282 #define OCTAVE_INT_FLOAT_BIN_OP(OP) \ |
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1283 template <typename T> \ |
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1284 inline octave_int<T> \ |
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1285 operator OP (const octave_int<T>& x, float y) \ |
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1286 { return x OP static_cast<double> (y); } \ |
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|
1287 template <typename T> \ |
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1288 inline octave_int<T> \ |
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|
1289 operator OP (float x, const octave_int<T>& y) \ |
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|
1290 { return static_cast<double> (x) OP y; } |
5072 | 1291 |
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1292 OCTAVE_INT_FLOAT_BIN_OP (+) |
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1293 OCTAVE_INT_FLOAT_BIN_OP (-) |
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1294 OCTAVE_INT_FLOAT_BIN_OP (*) |
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1295 OCTAVE_INT_FLOAT_BIN_OP (/) |
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1296 |
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1297 #undef OCTAVE_INT_FLOAT_BIN_OP |
5072 | 1298 |
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1299 #define OCTAVE_INT_FLOAT_CMP_OP(OP) \ |
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1300 template <typename T> \ |
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1301 inline bool \ |
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1302 operator OP (const octave_int<T>& x, const float& y) \ |
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1303 { return x OP static_cast<double> (y); } \ |
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1304 template <typename T> \ |
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1305 bool \ |
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1306 operator OP (const float& x, const octave_int<T>& y) \ |
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1307 { return static_cast<double> (x) OP y; } |
4902 | 1308 |
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1309 OCTAVE_INT_FLOAT_CMP_OP (<) |
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1310 OCTAVE_INT_FLOAT_CMP_OP (<=) |
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1311 OCTAVE_INT_FLOAT_CMP_OP (>=) |
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1312 OCTAVE_INT_FLOAT_CMP_OP (>) |
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1313 OCTAVE_INT_FLOAT_CMP_OP (==) |
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1314 OCTAVE_INT_FLOAT_CMP_OP (!=) |
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1315 |
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1316 #undef OCTAVE_INT_FLOAT_CMP_OP |
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1317 |
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1318 template <typename T> |
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1319 octave_int<T> |
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1320 xmax (const octave_int<T>& x, const octave_int<T>& y) |
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1321 { |
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1322 const T xv = x.value (); |
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1323 const T yv = y.value (); |
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1324 return octave_int<T> (xv >= yv ? xv : yv); |
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1325 } |
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1326 |
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1327 template <typename T> |
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1328 octave_int<T> |
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1329 xmin (const octave_int<T>& x, const octave_int<T>& y) |
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1330 { |
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1331 const T xv = x.value (); |
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1332 const T yv = y.value (); |
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|
1333 return octave_int<T> (xv <= yv ? xv : yv); |
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1334 } |
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1335 |
4902 | 1336 #endif |