1 | //
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
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3 | //
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4 | // The contents of this file are covered under the licence agreement in the
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5 | // file "LICENCE" distributed with Cforall.
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6 | //
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7 | // stdlib.c --
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8 | //
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9 | // Author : Peter A. Buhr
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10 | // Created On : Thu Jan 28 17:10:29 2016
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11 | // Last Modified By : Peter A. Buhr
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12 | // Last Modified On : Sun Apr 21 16:17:22 2024
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13 | // Update Count : 700
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14 | //
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15 |
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16 | #include "stdlib.hfa"
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17 | #include "bits/random.hfa"
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18 | #include "concurrency/invoke.h" // random_state
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19 |
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20 | //---------------------------------------
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21 |
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22 | #include <string.h> // memcpy, memset
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23 | #include <complex.h> // _Complex_I
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24 | #include <assert.h>
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25 | #include <ctype.h> // isblank
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26 |
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27 | #pragma GCC visibility push(default)
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28 |
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29 | //---------------------------------------
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30 |
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31 | // Cforall allocation/deallocation and constructor/destructor, array types
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32 |
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33 | forall( T & | sized(T), Parms ... | { void ?{}( T &, Parms ); } )
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34 | T * anew( size_t dim, Parms p ) {
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35 | T * arr = alloc( dim );
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36 | for ( i; dim ) {
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37 | (arr[i]){ p }; // run constructor
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38 | } // for
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39 | return arr;
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40 | } // anew
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41 |
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42 | forall( T & | sized(T) | { void ^?{}( T & ); } )
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43 | void adelete( T arr[] ) {
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44 | if ( arr ) { // ignore null
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45 | size_t dim = malloc_size( arr ) / sizeof( T );
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46 | for ( i; 0 -~= dim - 1 ) { // reverse allocation order, must be unsigned
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47 | ^(arr[i]){}; // run destructor
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48 | } // for
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49 | free( arr );
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50 | } // if
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51 | } // adelete
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52 |
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53 | forall( T & | sized(T) | { void ^?{}( T & ); }, List ... | { void adelete( List ); } )
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54 | void adelete( T arr[], List rest ) {
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55 | if ( arr ) { // ignore null
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56 | size_t dim = malloc_size( arr ) / sizeof( T );
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57 | for ( i; 0 -~= dim - 1 ) { // reverse allocation order, must be unsigned
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58 | ^(arr[i]){}; // run destructor
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59 | } // for
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60 | free( arr );
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61 | } // if
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62 | adelete( rest );
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63 | } // adelete
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64 |
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65 | //---------------------------------------
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66 |
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67 | // Check if all string characters are a specific kind, e.g., checkif( s, isblank )
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68 |
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69 | bool checkif( const char s[], int (* kind)( int ) ) {
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70 | for () {
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71 | if ( *s == '\0' ) return true;
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72 | if ( ! kind( *s ) ) return false;
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73 | s += 1;
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74 | } // for
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75 | } // checkif
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76 |
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77 | bool checkif( const char s[], int (* kind)( int, locale_t ), locale_t locale ) {
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78 | for () {
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79 | if ( *s == '\0' ) return true;
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80 | if ( ! kind( *s, locale ) ) return false;
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81 | s += 1;
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82 | } // for
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83 | } // checkif
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84 |
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85 | //---------------------------------------
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86 |
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87 | float _Complex strto( const char sptr[], char * eptr[] ) {
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88 | float re, im;
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89 | char * eeptr;
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90 | errno = 0; // reset
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91 | re = strtof( sptr, &eeptr );
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92 | if ( sptr != eeptr ) {
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93 | im = strtof( eeptr, &eeptr );
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94 | if ( sptr != eeptr ) {
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95 | if ( *eeptr == 'i' ) {
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96 | if ( eptr != 0p ) *eptr = eeptr + 1;
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97 | return re + im * _Complex_I;
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98 | } // if
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99 | } // if
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100 | } // if
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101 | if ( eptr != 0p ) *eptr = eeptr; // error case
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102 | return 0.0f + 0.0f * _Complex_I;
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103 | } // strto
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104 |
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105 | double _Complex strto( const char sptr[], char * eptr[] ) {
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106 | double re, im;
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107 | char * eeptr;
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108 | re = strtod( sptr, &eeptr );
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109 | if ( sptr != eeptr ) {
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110 | im = strtod( eeptr, &eeptr );
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111 | if ( sptr != eeptr ) {
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112 | if ( *eeptr == 'i' ) {
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113 | if ( eptr != 0p ) *eptr = eeptr + 1;
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114 | return re + im * _Complex_I;
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115 | } // if
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116 | } // if
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117 | } // if
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118 | if ( eptr != 0p ) *eptr = eeptr; // error case
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119 | return 0.0 + 0.0 * _Complex_I;
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120 | } // strto
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121 |
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122 | long double _Complex strto( const char sptr[], char * eptr[] ) {
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123 | long double re, im;
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124 | char * eeptr;
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125 | re = strtold( sptr, &eeptr );
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126 | if ( sptr != eeptr ) {
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127 | im = strtold( eeptr, &eeptr );
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128 | if ( sptr != eeptr ) {
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129 | if ( *eeptr == 'i' ) {
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130 | if ( eptr != 0p ) *eptr = eeptr + 1;
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131 | return re + im * _Complex_I;
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132 | } // if
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133 | } // if
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134 | } // if
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135 | if ( eptr != 0p ) *eptr = eeptr; // error case
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136 | return 0.0L + 0.0L * _Complex_I;
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137 | } // strto
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138 |
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139 | forall( T | { T strto( const char sptr[], char * eptr[], int ); } )
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140 | T convert( const char sptr[] ) { // integral
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141 | char * eptr;
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142 | errno = 0; // reset
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143 | T val = strto( sptr, &eptr, 10 ); // attempt conversion
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144 | if ( errno == ERANGE ) throw ExceptionInst( out_of_range );
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145 | if ( eptr == sptr || // conversion failed, no characters generated
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146 | eptr[0] != '\0' && ! checkif( eptr, isblank ) ) throw ExceptionInst( invalid_argument ); // not at end of blank str ?
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147 | return val;
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148 | } // convert
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149 |
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150 | forall( T | { T strto( const char sptr[], char * eptr[] ); } )
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151 | T convert( const char sptr[] ) { // floating-point
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152 | char * eptr;
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153 | errno = 0; // reset
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154 | T val = strto( sptr, &eptr ); // attempt conversion
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155 | if ( errno == ERANGE ) throw ExceptionInst( out_of_range );
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156 | if ( eptr == sptr || // conversion failed, no characters generated
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157 | eptr[0] != '\0' && ! checkif( eptr, isblank ) ) throw ExceptionInst( invalid_argument ); // not at end of blank str ?
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158 | return val;
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159 | } // convert
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160 |
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161 | //---------------------------------------
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162 |
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163 | forall( E | { int ?<?( E, E ); } ) {
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164 | E * bsearch( E key, const E * vals, size_t dim ) {
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165 | int cmp( const void * t1, const void * t2 ) {
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166 | return *(E *)t1 < *(E *)t2 ? -1 : *(E *)t2 < *(E *)t1 ? 1 : 0;
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167 | } // cmp
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168 | return (E *)bsearch( &key, vals, dim, sizeof(E), cmp );
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169 | } // bsearch
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170 |
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171 | size_t bsearch( E key, const E * vals, size_t dim ) {
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172 | E * result = bsearch( key, vals, dim );
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173 | return result ? result - vals : dim; // pointer subtraction includes sizeof(E)
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174 | } // bsearch
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175 |
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176 | size_t bsearchl( E key, const E * vals, size_t dim ) {
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177 | size_t l = 0, m, h = dim;
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178 | while ( l < h ) {
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179 | m = (l + h) / 2;
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180 | if ( (E &)(vals[m]) < key ) { // cast away const
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181 | l = m + 1;
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182 | } else {
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183 | h = m;
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184 | } // if
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185 | } // while
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186 | return l;
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187 | } // bsearchl
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188 |
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189 | E * bsearchl( E key, const E * vals, size_t dim ) {
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190 | size_t posn = bsearchl( key, vals, dim );
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191 | return (E *)(&vals[posn]); // cast away const
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192 | } // bsearchl
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193 |
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194 | size_t bsearchu( E key, const E * vals, size_t dim ) {
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195 | size_t l = 0, m, h = dim;
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196 | while ( l < h ) {
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197 | m = (l + h) / 2;
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198 | if ( ! ( key < (E &)(vals[m]) ) ) { // cast away const
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199 | l = m + 1;
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200 | } else {
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201 | h = m;
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202 | } // if
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203 | } // while
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204 | return l;
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205 | } // bsearchu
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206 |
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207 | E * bsearchu( E key, const E * vals, size_t dim ) {
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208 | size_t posn = bsearchu( key, vals, dim );
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209 | return (E *)(&vals[posn]);
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210 | } // bsearchu
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211 |
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212 |
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213 | void qsort( E * vals, size_t dim ) {
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214 | int cmp( const void * t1, const void * t2 ) {
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215 | return *(E *)t1 < *(E *)t2 ? -1 : *(E *)t2 < *(E *)t1 ? 1 : 0;
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216 | } // cmp
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217 | qsort( vals, dim, sizeof(E), cmp );
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218 | } // qsort
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219 | } // distribution
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220 |
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221 |
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222 | forall( K, E | { int ?<?( K, K ); K getKey( const E & ); } ) {
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223 | E * bsearch( K key, const E * vals, size_t dim ) {
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224 | int cmp( const void * t1, const void * t2 ) {
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225 | return *(K *)t1 < getKey( *(E *)t2 ) ? -1 : getKey( *(E *)t2 ) < *(K *)t1 ? 1 : 0;
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226 | } // cmp
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227 | return (E *)bsearch( &key, vals, dim, sizeof(E), cmp );
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228 | } // bsearch
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229 |
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230 | size_t bsearch( K key, const E * vals, size_t dim ) {
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231 | E * result = bsearch( key, vals, dim );
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232 | return result ? result - vals : dim; // pointer subtraction includes sizeof(E)
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233 | } // bsearch
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234 |
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235 | size_t bsearchl( K key, const E * vals, size_t dim ) {
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236 | size_t l = 0, m, h = dim;
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237 | while ( l < h ) {
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238 | m = (l + h) / 2;
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239 | if ( getKey( vals[m] ) < key ) {
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240 | l = m + 1;
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241 | } else {
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242 | h = m;
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243 | } // if
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244 | } // while
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245 | return l;
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246 | } // bsearchl
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247 |
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248 | E * bsearchl( K key, const E * vals, size_t dim ) {
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249 | size_t posn = bsearchl( key, vals, dim );
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250 | return (E *)(&vals[posn]); // cast away const
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251 | } // bsearchl
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252 |
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253 | size_t bsearchu( K key, const E * vals, size_t dim ) {
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254 | size_t l = 0, m, h = dim;
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255 | while ( l < h ) {
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256 | m = (l + h) / 2;
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257 | if ( ! ( key < getKey( vals[m] ) ) ) {
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258 | l = m + 1;
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259 | } else {
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260 | h = m;
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261 | } // if
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262 | } // while
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263 | return l;
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264 | } // bsearchu
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265 |
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266 | E * bsearchu( K key, const E * vals, size_t dim ) {
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267 | size_t posn = bsearchu( key, vals, dim );
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268 | return (E *)(&vals[posn]);
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269 | } // bsearchu
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270 | } // distribution
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271 |
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272 | //---------------------------------------
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273 |
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274 | extern "C" { // override C version
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275 | void srandom( unsigned int seed ) { srand48( (long int)seed ); }
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276 | long int random( void ) { return mrand48(); } // GENERATES POSITIVE AND NEGATIVE VALUES
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277 | } // extern "C"
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278 |
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279 | float random( void ) { return (float)drand48(); } // cast otherwise float uses lrand48
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280 | double random( void ) { return drand48(); }
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281 | float _Complex random( void ) { return (float)drand48() + (float _Complex)(drand48() * _Complex_I); }
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282 | double _Complex random( void ) { return drand48() + (double _Complex)(drand48() * _Complex_I); }
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283 | long double _Complex random( void ) { return (long double)drand48() + (long double _Complex)(drand48() * _Complex_I); }
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284 |
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285 | //---------------------------------------
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286 |
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287 | // would be cool to make hidden but it's needed for libcfathread
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288 | __attribute__((visibility("default"))) size_t __global_random_seed; // sequential/concurrent
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289 | __attribute__((visibility("hidden"))) PRNG_STATE_T __global_random_state; // sequential only
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290 |
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291 | void set_seed( size_t seed ) {
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292 | __global_random_seed = seed;
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293 | PRNG_SET_SEED( __global_random_state, seed );
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294 | } // set_seed
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295 |
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296 | size_t get_seed() { return __global_random_seed; }
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297 | size_t prng( void ) { return PRNG_NAME( __global_random_state ); } // [0,UINT_MAX]
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298 |
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299 | //---------------------------------------
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300 |
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301 | bool threading_enabled( void ) __attribute__(( weak )) { return false; }
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302 |
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303 | // Local Variables: //
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304 | // tab-width: 4 //
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305 | // End: //
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