annotate liboctave/oct-inttypes.h @ 4943:1a499d0c58f5

[project @ 2004-08-31 00:51:31 by jwe]
author jwe
date Tue, 31 Aug 2004 00:51:31 +0000
parents b22a7a1db0d5
children f6b63ff1119b
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1 /*
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2
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3 Copyright (C) 2004 John W. Eaton
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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 2, or (at your option) any
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10 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, write to the Free
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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20
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21 */
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22
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23 #if !defined (octave_inttypes_h)
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24 #define octave_inttypes_h 1
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25
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26 #include <limits>
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27
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28 #include <iostream>
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29
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30 #include "data-conv.h"
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31
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32 typedef signed char octave_int8_t;
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33 typedef TWO_BYTE_INT octave_int16_t;
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34 typedef FOUR_BYTE_INT octave_int32_t;
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35 typedef EIGHT_BYTE_INT octave_int64_t;
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36
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37 typedef unsigned char octave_uint8_t;
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38 typedef unsigned TWO_BYTE_INT octave_uint16_t;
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39 typedef unsigned FOUR_BYTE_INT octave_uint32_t;
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40 typedef unsigned EIGHT_BYTE_INT octave_uint64_t;
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41
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42 template <class T1, class T2>
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43 class
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44 octave_int_binop_traits
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45 {
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46 public:
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47 // The return type for a T1 by T2 binary operation.
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48 typedef T1 TR;
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49 };
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50
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51 #define OCTAVE_INT_BINOP_TRAIT(T1, T2, T3) \
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52 template<> \
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53 class octave_int_binop_traits <T1, T2> \
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54 { \
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55 public: \
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56 typedef T3 TR; \
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57 }
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58
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59 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_int8_t, octave_int8_t);
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60 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_int16_t, octave_int8_t);
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61 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_int32_t, octave_int8_t);
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62 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_int64_t, octave_int8_t);
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63 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_uint8_t, octave_int8_t);
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64 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_uint16_t, octave_int8_t);
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65 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_uint32_t, octave_int8_t);
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66 OCTAVE_INT_BINOP_TRAIT (octave_int8_t, octave_uint64_t, octave_int8_t);
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67
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68 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_int8_t, octave_int16_t);
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69 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_int16_t, octave_int16_t);
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70 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_int32_t, octave_int16_t);
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71 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_int64_t, octave_int16_t);
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72 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_uint8_t, octave_int16_t);
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73 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_uint16_t, octave_int16_t);
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74 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_uint32_t, octave_int16_t);
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75 OCTAVE_INT_BINOP_TRAIT (octave_int16_t, octave_uint64_t, octave_int16_t);
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76
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77 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_int8_t, octave_int32_t);
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78 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_int16_t, octave_int32_t);
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79 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_int32_t, octave_int32_t);
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80 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_int64_t, octave_int32_t);
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81 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_uint8_t, octave_int32_t);
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82 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_uint16_t, octave_int32_t);
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83 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_uint32_t, octave_int32_t);
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84 OCTAVE_INT_BINOP_TRAIT (octave_int32_t, octave_uint64_t, octave_int32_t);
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85
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86 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_int8_t, octave_int64_t);
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87 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_int16_t, octave_int64_t);
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88 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_int32_t, octave_int64_t);
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89 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_int64_t, octave_int64_t);
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90 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_uint8_t, octave_int64_t);
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91 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_uint16_t, octave_int64_t);
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92 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_uint32_t, octave_int64_t);
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93 OCTAVE_INT_BINOP_TRAIT (octave_int64_t, octave_uint64_t, octave_int64_t);
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94
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95 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_int8_t, octave_int8_t);
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96 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_int16_t, octave_int8_t);
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97 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_int32_t, octave_int8_t);
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98 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_int64_t, octave_int8_t);
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99 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_uint8_t, octave_uint8_t);
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100 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_uint16_t, octave_uint8_t);
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101 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_uint32_t, octave_uint8_t);
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102 OCTAVE_INT_BINOP_TRAIT (octave_uint8_t, octave_uint64_t, octave_uint8_t);
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103
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104 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_int8_t, octave_int16_t);
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105 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_int16_t, octave_int16_t);
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106 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_int32_t, octave_int16_t);
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107 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_int64_t, octave_int16_t);
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108 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_uint8_t, octave_uint16_t);
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109 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_uint16_t, octave_uint16_t);
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110 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_uint32_t, octave_uint16_t);
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111 OCTAVE_INT_BINOP_TRAIT (octave_uint16_t, octave_uint64_t, octave_uint16_t);
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112
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113 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_int8_t, octave_int32_t);
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114 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_int16_t, octave_int32_t);
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115 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_int32_t, octave_int32_t);
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116 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_int64_t, octave_int32_t);
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117 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_uint8_t, octave_uint32_t);
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118 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_uint16_t, octave_uint32_t);
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119 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_uint32_t, octave_uint32_t);
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120 OCTAVE_INT_BINOP_TRAIT (octave_uint32_t, octave_uint64_t, octave_uint32_t);
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121
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122 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_int8_t, octave_int64_t);
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123 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_int16_t, octave_int64_t);
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124 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_int32_t, octave_int64_t);
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125 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_int64_t, octave_int64_t);
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126 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_uint8_t, octave_uint64_t);
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127 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_uint16_t, octave_uint64_t);
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128 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_uint32_t, octave_uint64_t);
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129 OCTAVE_INT_BINOP_TRAIT (octave_uint64_t, octave_uint64_t, octave_uint64_t);
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130
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131 template <class T1, class T2>
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132 inline T2
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133 octave_int_fit_to_range (const T1& x, const T2& mn, const T2& mx)
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134 {
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135 return (x > mx ? mx : (x < mn ? mn : static_cast<T2> (x)));
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136 }
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137
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138 // If X is unsigned and the new type is signed, then we only have to
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139 // check the upper limit, but we should cast the maximum value of the
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140 // new type to an unsigned type before performing the comparison.
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141 // This should always be OK because the maximum value should always be
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142 // positive.
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143
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144 #define US_S_FTR(T1, T2, TC) \
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145 template <> \
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146 inline T2 \
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147 octave_int_fit_to_range<T1, T2> (const T1& x, const T2&, const T2& mx) \
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148 { \
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149 return x > static_cast<TC> (mx) ? mx : x; \
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150 }
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151
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152 #define US_S_FTR_FCNS(T) \
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153 US_S_FTR(T, char, unsigned char) \
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154 US_S_FTR(T, signed char, unsigned char) \
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155 US_S_FTR(T, short, unsigned short) \
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156 US_S_FTR(T, int, unsigned int) \
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157 US_S_FTR(T, long, unsigned long) \
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158 US_S_FTR(T, long long, unsigned long long)
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159
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160 US_S_FTR_FCNS (unsigned char)
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161 US_S_FTR_FCNS (unsigned short)
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162 US_S_FTR_FCNS (unsigned int)
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163 US_S_FTR_FCNS (unsigned long)
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164 US_S_FTR_FCNS (unsigned long long)
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165
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166 // If X is signed and the new type is unsigned, then we only have to
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167 // check the lower limit (which will always be 0 for an unsigned
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168 // type). The upper limit will be enforced correctly by converting to
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169 // the new type, even if the type of X is wider than the new type.
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170
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171 #define S_US_FTR(T1, T2) \
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172 template <> \
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173 inline T2 \
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174 octave_int_fit_to_range<T1, T2> (const T1& x, const T2&, const T2&) \
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175 { \
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176 return x < 0 ? 0 : x; \
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177 }
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178
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179 #define S_US_FTR_FCNS(T) \
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180 S_US_FTR(T, unsigned char) \
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181 S_US_FTR(T, unsigned short) \
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182 S_US_FTR(T, unsigned int) \
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183 S_US_FTR(T, unsigned long) \
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184 S_US_FTR(T, unsigned long long)
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185
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186 S_US_FTR_FCNS (char)
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187 S_US_FTR_FCNS (signed char)
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188 S_US_FTR_FCNS (short)
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189 S_US_FTR_FCNS (int)
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190 S_US_FTR_FCNS (long)
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191 S_US_FTR_FCNS (long long)
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192
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193 #define OCTAVE_INT_FIT_TO_RANGE(r, T) \
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194 octave_int_fit_to_range (r, \
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195 std::numeric_limits<T>::min (), \
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196 std::numeric_limits<T>::max ())
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197
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198 #define OCTAVE_INT_MIN_VAL2(T1, T2) \
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199 std::numeric_limits<typename octave_int_binop_traits<T1, T2>::TR>::min ()
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200
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201 #define OCTAVE_INT_MAX_VAL2(T1, T2) \
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202 std::numeric_limits<typename octave_int_binop_traits<T1, T2>::TR>::max ()
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203
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204 #define OCTAVE_INT_FIT_TO_RANGE2(r, T1, T2) \
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205 octave_int_fit_to_range (r, \
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206 OCTAVE_INT_MIN_VAL2 (T1, T2), \
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207 OCTAVE_INT_MAX_VAL2 (T1, T2))
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208
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209 template <class T>
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210 class
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211 octave_int
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212 {
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213 public:
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214
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215 typedef T val_type;
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216
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217 octave_int (void) : ival () { }
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218
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219 template <class U>
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220 octave_int (U i) : ival (OCTAVE_INT_FIT_TO_RANGE (i, T)) { }
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221
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222 octave_int (bool b) : ival (b) { }
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223
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224 template <class U>
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225 octave_int (const octave_int<U>& i)
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226 : ival (OCTAVE_INT_FIT_TO_RANGE (i.value (), T)) { }
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227
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228 octave_int (const octave_int<T>& i) : ival (i.ival) { }
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229
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230 octave_int& operator = (const octave_int<T>& i)
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231 {
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232 ival = i.ival;
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233 return *this;
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234 }
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235
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236 ~octave_int (void) { }
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237
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238 T value (void) const { return ival; }
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239
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240 bool operator ! (void) const { return ! ival; }
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241
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242 octave_int<T> operator + (void) const { return *this; }
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243
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244 octave_int<T> operator - (void) const
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245 {
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246 return std::numeric_limits<T>::is_signed ? -ival : 0;
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247 }
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248
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249 operator double (void) const { return static_cast<double> (value ()); }
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250
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251 octave_int<T>& operator += (const octave_int<T>& x)
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252 {
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253 double t = static_cast<double> (value ());
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254 double tx = static_cast<double> (x.value ());
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255 ival = OCTAVE_INT_FIT_TO_RANGE (t + tx, T);
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256 return *this;
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257 }
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258
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259 octave_int<T>& operator -= (const octave_int<T>& x)
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260 {
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261 double t = static_cast<double> (value ());
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262 double tx = static_cast<double> (x.value ());
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263 ival = OCTAVE_INT_FIT_TO_RANGE (t - tx, T);
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264 return *this;
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265 }
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266
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267 octave_int<T> min (void) const { return std::numeric_limits<T>::min (); }
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268 octave_int<T> max (void) const { return std::numeric_limits<T>::max (); }
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269
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270 static int nbits (void) { return sizeof (T) * CHAR_BIT; }
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271
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272 private:
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273
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274 T ival;
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275 };
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276
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277 template <class T>
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278 std::ostream&
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279 operator << (std::ostream& os, const octave_int<T>& ival)
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280 {
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281 os << ival.value ();
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282 return os;
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283 }
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284
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285 template <class T>
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286 std::istream&
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287 operator >> (std::istream& is, octave_int<T>& ival)
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288 {
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289 T tmp = 0;
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290 is >> tmp;
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291 ival = tmp;
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292 return is;
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293 }
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294
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295 typedef octave_int<octave_int8_t> octave_int8;
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296 typedef octave_int<octave_int16_t> octave_int16;
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297 typedef octave_int<octave_int32_t> octave_int32;
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298 typedef octave_int<octave_int64_t> octave_int64;
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299
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300 typedef octave_int<octave_uint8_t> octave_uint8;
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301 typedef octave_int<octave_uint16_t> octave_uint16;
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302 typedef octave_int<octave_uint32_t> octave_uint32;
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303 typedef octave_int<octave_uint64_t> octave_uint64;
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304
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305 #define OCTAVE_INT_BIN_OP(OP) \
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306 \
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307 template <class T1, class T2> \
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308 octave_int<typename octave_int_binop_traits<T1, T2>::TR> \
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309 operator OP (const octave_int<T1>& x, const octave_int<T2>& y) \
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310 { \
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311 double tx = static_cast<double> (x.value ()); \
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312 double ty = static_cast<double> (y.value ()); \
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313 double r = tx OP ty; \
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314 return OCTAVE_INT_FIT_TO_RANGE2 (r, T1, T2); \
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315 }
4902
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316
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317 OCTAVE_INT_BIN_OP(+)
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318 OCTAVE_INT_BIN_OP(-)
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319 OCTAVE_INT_BIN_OP(*)
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320 OCTAVE_INT_BIN_OP(/)
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321
4906
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322 #define OCTAVE_INT_BITCMP_OP(OP) \
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323 \
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324 template <class T> \
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325 octave_int<T> \
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326 operator OP (const octave_int<T>& x, const octave_int<T>& y) \
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327 { \
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328 return x.value () OP y.value (); \
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329 }
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330
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331 OCTAVE_INT_BITCMP_OP (&)
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332 OCTAVE_INT_BITCMP_OP (|)
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333 OCTAVE_INT_BITCMP_OP (^)
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334
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335 #define OCTAVE_INT_BITSHIFT_OP(OP) \
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336 \
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337 template <class T1, class T2> \
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338 octave_int<T1> \
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339 operator OP (const octave_int<T1>& x, const T2& y) \
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340 { \
4920
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341 return ((x.value () OP y) > std::numeric_limits<T1>::max ()) ? 0 : (x.value () OP y); \
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342 }
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343
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344 OCTAVE_INT_BITSHIFT_OP (<<)
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345 OCTAVE_INT_BITSHIFT_OP (>>)
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346
4909
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347 template <class T>
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348 octave_int<T>
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349 bitshift (const octave_int<T>& a, int n,
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350 const octave_int<T>& mask = std::numeric_limits<T>::max ())
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351 {
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352 if (n > 0)
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353 return (a.value () << n) & mask.value ();
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354 else if (n < 0)
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355 return (a.value () >> -n) & mask.value ();
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356 else
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357 return a;
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358 }
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359
4902
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360 #define OCTAVE_INT_CMP_OP(OP) \
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361 \
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362 template <class T1, class T2> \
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363 bool \
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364 operator OP (const octave_int<T1>& x, const octave_int<T2>& y) \
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365 { \
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366 return x.value () OP y.value (); \
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367 }
4902
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368
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369 OCTAVE_INT_CMP_OP (<)
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370 OCTAVE_INT_CMP_OP (<=)
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371 OCTAVE_INT_CMP_OP (>=)
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372 OCTAVE_INT_CMP_OP (>)
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373 OCTAVE_INT_CMP_OP (==)
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374 OCTAVE_INT_CMP_OP (!=)
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375
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376 #define OCTAVE_INT_CONCAT_FN(TYPE) \
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377 intNDArray< TYPE > \
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378 concat (const intNDArray< TYPE >& ra, const intNDArray< TYPE >& rb, \
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379 const Array<int>& ra_idx) \
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380 { \
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381 intNDArray< TYPE > retval (ra); \
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382 retval.insert (rb, ra_idx); \
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383 return retval; \
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384 }
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385
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386 #define OCTAVE_INT_CONCAT_DECL(TYPE) \
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387 intNDArray< TYPE > \
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388 concat (const intNDArray< TYPE >& ra, const intNDArray< TYPE >& rb, \
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389 const Array<int>& ra_idx);
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390
4902
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391 #undef OCTAVE_INT_TRAIT
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392 #undef OCTAVE_INT_BINOP_TRAIT
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393 #undef OCTAVE_INT_MIN_VAL
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394 #undef OCTAVE_INT_MAX_VAL
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395 #undef OCTAVE_INT_FIT_TO_RANGE
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396 #undef OCTAVE_INT_MIN_VAL2
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397 #undef OCTAVE_INT_MAX_VAL2
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398 #undef OCTAVE_INT_FIT_TO_RANGE2
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399 #undef OCTAVE_INT_BIN_OP
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400 #undef OCTAVE_INT_CMP_OP
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401
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402 #endif
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403
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404 /*
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405 ;;; Local Variables: ***
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406 ;;; mode: C++ ***
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407 ;;; End: ***
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408 */