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annotate libinterp/corefcn/hex2num.cc @ 21100:e39e05d90788

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Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. * libinterp/corefcn/errwarn.h, libinterp/corefcn/errwarn.cc: New header and .cc file with common errors and warnings for libinterp. * libinterp/corefcn/module.mk: Add errwarn.h, errwarn.cc to build system. * liboctave/util/lo-array-errwarn.h, liboctave/util/lo-array-errwarn.cc: New header and .cc file with common errors and warnings for liboctave. * liboctave/util/module.mk: Add lo-array-errwarn.h, lo-array-errwarn.cc to build system. * lo-array-gripes.h: #include "lo-array-errwarn.h" for access to class index_exception. Remove const char *error_id_XXX prototypes. * lo-array-gripes.cc: Remove const char *error_id_XXX initializations. Remove index_exception method definitions. * Cell.cc, __pchip_deriv__.cc, __qp__.cc, balance.cc, betainc.cc, cellfun.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc, det.cc, dirfns.cc, eig.cc, fft.cc, fft2.cc, fftn.cc, find.cc, gammainc.cc, gcd.cc, getgrent.cc, getpwent.cc, graphics.in.h, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, jit-typeinfo.cc, load-save.cc, lookup.cc, ls-hdf5.cc, ls-mat-ascii.cc, ls-mat4.cc, ls-mat5.cc, ls-oct-binary.cc, ls-oct-text.cc, lsode.cc, lu.cc, luinc.cc, max.cc, mgorth.cc, oct-hist.cc, oct-procbuf.cc, oct-stream.cc, oct.h, pager.cc, pinv.cc, pr-output.cc, quad.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sparse-xdiv.cc, sparse-xpow.cc, sparse.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, syscalls.cc, typecast.cc, utils.cc, variables.cc, xdiv.cc, xnorm.cc, xpow.cc, __eigs__.cc, __glpk__.cc, __magick_read__.cc, __osmesa_print__.cc, audiodevinfo.cc, audioread.cc, chol.cc, dmperm.cc, fftw.cc, qr.cc, symbfact.cc, symrcm.cc, ov-base-diag.cc, ov-base-int.cc, ov-base-mat.cc, ov-base-scalar.cc, ov-base-sparse.cc, ov-base.cc, ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.cc, ov-cell.cc, ov-ch-mat.cc, ov-class.cc, ov-complex.cc, ov-complex.h, ov-cs-list.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-mat.cc, ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-intx.h, ov-mex-fcn.cc, ov-perm.cc, ov-range.cc, ov-re-mat.cc, ov-re-sparse.cc, ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-struct.cc, ov-type-conv.h, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc, ov-usr-fcn.cc, ov.cc, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dms-template.cc, op-double-conv.cc, op-fcdm-fcdm.cc, op-fcdm-fdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-float-conv.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-int-conv.cc, op-int.h, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h, lex.ll, pt-assign.cc, pt-eval.cc, pt-idx.cc, pt-loop.cc, pt-mat.cc, pt-stmt.cc, Array-util.cc, Array-util.h, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc, CNDArray.cc, CRowVector.cc, CSparse.cc, DiagArray2.cc, MDiagArray2.cc, MSparse.cc, PermMatrix.cc, Range.cc, Sparse.cc, dColVector.cc, dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc, fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc, idx-vector.cc, CmplxGEPBAL.cc, dbleGEPBAL.cc, fCmplxGEPBAL.cc, floatGEPBAL.cc, Sparse-diag-op-defs.h, Sparse-op-defs.h, Sparse-perm-op-defs.h, mx-inlines.cc, mx-op-defs.h, oct-binmap.h: Replace 'include "gripes.h"' with 'include "errwarn.h". Change all gripe_XXX to err_XXX or warn_XXX or errwarn_XXX.
author Rik <rik@octave.org>
date Mon, 18 Jan 2016 18:28:06 -0800
parents 3aa293be0e8d
children fcac5dbbf9ed
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1 /*
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2
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3 Copyright (C) 2008-2015 David Bateman
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <algorithm>
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28
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29 #include "defun.h"
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30 #include "error.h"
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31 #include "errwarn.h"
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32 #include "ovl.h"
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33 #include "utils.h"
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34
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35 DEFUN (hex2num, args, ,
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36 "-*- texinfo -*-\n\
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37 @deftypefn {} {@var{n} =} hex2num (@var{s})\n\
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38 @deftypefnx {} {@var{n} =} hex2num (@var{s}, @var{class})\n\
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39 Typecast the 16 character hexadecimal character string to an IEEE 754\n\
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40 double precision number.\n\
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41 \n\
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42 If fewer than 16 characters are given the strings are right padded with\n\
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43 @qcode{'0'} characters.\n\
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44 \n\
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45 Given a string matrix, @code{hex2num} treats each row as a separate number.\n\
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46 \n\
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47 @example\n\
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48 @group\n\
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49 hex2num ([\"4005bf0a8b145769\"; \"4024000000000000\"])\n\
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50 @result{} [2.7183; 10.000]\n\
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51 @end group\n\
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52 @end example\n\
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53 \n\
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54 The optional argument @var{class} can be passed as the string\n\
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55 @qcode{\"single\"} to specify that the given string should be interpreted as\n\
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56 a single precision number. In this case, @var{s} should be an 8 character\n\
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57 hexadecimal string. For example:\n\
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58 \n\
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59 @example\n\
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60 @group\n\
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61 hex2num ([\"402df854\"; \"41200000\"], \"single\")\n\
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62 @result{} [2.7183; 10.000]\n\
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63 @end group\n\
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64 @end example\n\
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65 @seealso{num2hex, hex2dec, dec2hex}\n\
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66 @end deftypefn")
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67 {
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68 int nargin = args.length ();
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69
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70 if (nargin < 1 || nargin > 2)
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71 print_usage ();
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72
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73 if (nargin == 2 && ! args(1).is_string ())
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74 error ("hex2num: CLASS must be a string");
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75
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76 const charMatrix cmat = args(0).char_matrix_value ();
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77 std::string prec = (nargin == 2) ? args(1).string_value () : "double";
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78 bool is_single = (prec == "single");
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79 octave_idx_type nchars = (is_single) ? 8 : 16;
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80
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81 if (cmat.columns () > nchars)
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82 error ("hex2num: S must be no more than %d characters", nchars);
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83 else if (prec != "double" && prec != "single")
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84 error ("hex2num: CLASS must be either \"double\" or \"single\"");
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85
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86 octave_value retval;
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87 octave_idx_type nr = cmat.rows ();
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88 octave_idx_type nc = cmat.columns ();
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89
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90 if (is_single)
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91 {
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92 FloatColumnVector m (nr);
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93
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94 for (octave_idx_type i = 0; i < nr; i++)
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95 {
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96 union
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97 {
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98 uint32_t ival;
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99 float dval;
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100 } num;
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101
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diff changeset
102 num.ival = 0;
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103
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104 for (octave_idx_type j = 0; j < nc; j++)
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105 {
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diff changeset
106 unsigned char ch = cmat.elem (i, j);
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107
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108 if (! isxdigit (ch))
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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109 error ("hex2num: illegal character found in string S");
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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diff changeset
110
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111 num.ival <<= 4;
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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112 if (ch >= 'a')
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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113 num.ival += static_cast<uint32_t> (ch - 'a' + 10);
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114 else if (ch >= 'A')
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115 num.ival += static_cast<uint32_t> (ch - 'A' + 10);
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116 else
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117 num.ival += static_cast<uint32_t> (ch - '0');
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118 }
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119
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120 if (nc < nchars)
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121 num.ival <<= (nchars - nc) * 4;
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122
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123 m(i) = num.dval;
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124 }
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125
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126 retval = m;
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127 }
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128 else
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129 {
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130 ColumnVector m (nr);
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131
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132 for (octave_idx_type i = 0; i < nr; i++)
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133 {
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134 union
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135 {
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136 uint64_t ival;
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137 double dval;
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138 } num;
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139
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140 num.ival = 0;
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141
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142 for (octave_idx_type j = 0; j < nc; j++)
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143 {
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144 unsigned char ch = cmat.elem (i, j);
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145
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146 if (! isxdigit (ch))
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147 error ("hex2num: illegal character found in string S");
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148
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149 num.ival <<= 4;
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150 if (ch >= 'a')
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151 num.ival += static_cast<uint64_t> (ch - 'a' + 10);
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152 else if (ch >= 'A')
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153 num.ival += static_cast<uint64_t> (ch - 'A' + 10);
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154 else
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diff changeset
155 num.ival += static_cast<uint64_t> (ch - '0');
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156 }
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157
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diff changeset
158 if (nc < nchars)
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159 num.ival <<= (nchars - nc) * 4;
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160
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161 m(i) = num.dval;
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162 }
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163
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164 retval = m;
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165 }
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166
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167 return retval;
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168 }
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169
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170 /*
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171 %!assert (hex2num (["c00";"bff";"000";"3ff";"400"]), [-2:2]')
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172 %!assert (hex2num (["c00";"bf8";"000";"3f8";"400"], "single"), single([-2:2])')
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173 */
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174
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diff changeset
175 DEFUN (num2hex, args, ,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
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176 "-*- texinfo -*-\n\
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177 @deftypefn {} {@var{s} =} num2hex (@var{n})\n\
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178 Typecast a double or single precision number or vector to a 8 or 16\n\
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179 character hexadecimal string of the IEEE 754 representation of the number.\n\
20172
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180 \n\
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181 For example:\n\
7639
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182 \n\
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parents:
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183 @example\n\
9064
7c02ec148a3c Check grammar on all .cc files
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diff changeset
184 @group\n\
17177
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185 num2hex ([-1, 1, e, Inf])\n\
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186 @result{} \"bff0000000000000\n\
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187 3ff0000000000000\n\
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188 4005bf0a8b145769\n\
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diff changeset
189 7ff0000000000000\"\n\
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diff changeset
190 @end group\n\
81d3c4409645 num2hex: Handle single precision argument correctly (bug #39607)
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191 @end example\n\
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192 \n\
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diff changeset
193 If the argument @var{n} is a single precision number or vector, the returned\n\
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diff changeset
194 string has a length of 8. For example:\n\
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diff changeset
195 \n\
81d3c4409645 num2hex: Handle single precision argument correctly (bug #39607)
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diff changeset
196 @example\n\
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diff changeset
197 @group\n\
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198 num2hex (single ([-1, 1, e, Inf]))\n\
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199 @result{} \"bf800000\n\
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200 3f800000\n\
81d3c4409645 num2hex: Handle single precision argument correctly (bug #39607)
Mike Miller <mtmiller@ieee.org>
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diff changeset
201 402df854\n\
81d3c4409645 num2hex: Handle single precision argument correctly (bug #39607)
Mike Miller <mtmiller@ieee.org>
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202 7f800000\"\n\
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diff changeset
203 @end group\n\
7639
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204 @end example\n\
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205 @seealso{hex2num, hex2dec, dec2hex}\n\
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diff changeset
206 @end deftypefn")
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207 {
20819
f428cbe7576f eliminate unnecessary uses of nargin
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parents: 20812
diff changeset
208 if (args.length () != 1)
7639
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diff changeset
209 print_usage ();
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
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diff changeset
210
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diff changeset
211 octave_value retval;
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diff changeset
212
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diff changeset
213 if (args(0).is_single_type ())
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diff changeset
214 {
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diff changeset
215 const FloatColumnVector v (args(0).float_vector_value ());
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diff changeset
216
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diff changeset
217 octave_idx_type nchars = 8;
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diff changeset
218 octave_idx_type nr = v.numel ();
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diff changeset
219 charMatrix m (nr, nchars);
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diff changeset
220 const float *pv = v.fortran_vec ();
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diff changeset
221
20678
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diff changeset
222 for (octave_idx_type i = 0; i < nr; i++)
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diff changeset
223 {
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diff changeset
224 union
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diff changeset
225 {
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diff changeset
226 uint32_t ival;
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diff changeset
227 float dval;
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diff changeset
228 } num;
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diff changeset
229
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diff changeset
230 num.dval = *pv++;
17177
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diff changeset
231
20678
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diff changeset
232 for (octave_idx_type j = 0; j < nchars; j++)
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diff changeset
233 {
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diff changeset
234 unsigned char ch =
4b00afb5e9c3 eliminate more uses of error_state
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diff changeset
235 static_cast<char>(num.ival >> ((nchars - 1 - j) * 4) & 0xF);
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diff changeset
236 if (ch >= 10)
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diff changeset
237 ch += 'a' - 10;
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diff changeset
238 else
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diff changeset
239 ch += '0';
17177
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diff changeset
240
20678
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diff changeset
241 m.elem (i, j) = ch;
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diff changeset
242 }
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243 }
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244
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245 retval = m;
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246 }
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247 else
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248 {
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249 const ColumnVector v (args(0).vector_value ());
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250
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251 octave_idx_type nchars = 16;
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252 octave_idx_type nr = v.numel ();
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253 charMatrix m (nr, nchars);
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254 const double *pv = v.fortran_vec ();
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255
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256 for (octave_idx_type i = 0; i < nr; i++)
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257 {
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258 union
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259 {
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260 uint64_t ival;
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261 double dval;
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262 } num;
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263
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264 num.dval = *pv++;
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265
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266 for (octave_idx_type j = 0; j < nchars; j++)
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267 {
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268 unsigned char ch =
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269 static_cast<char>(num.ival >> ((nchars - 1 - j) * 4) & 0xF);
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270 if (ch >= 10)
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271 ch += 'a' - 10;
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272 else
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273 ch += '0';
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274
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275 m.elem (i, j) = ch;
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276 }
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277 }
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278
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279 retval = m;
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280 }
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281
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282 return retval;
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283 }
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284
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285 /*
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286 %!assert (num2hex (-2:2), ["c000000000000000";"bff0000000000000";"0000000000000000";"3ff0000000000000";"4000000000000000"])
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287 %!assert (num2hex (single (-2:2)), ["c0000000";"bf800000";"00000000";"3f800000";"40000000"])
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288 */