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 : Sat Jun 2 06:15:05 2018 |
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13 | // Update Count : 448 |
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14 | // |
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15 | |
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16 | #include "stdlib" |
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17 | |
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18 | //--------------------------------------- |
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19 | |
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20 | #define _XOPEN_SOURCE 600 // posix_memalign, *rand48 |
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21 | #include <string.h> // memcpy, memset |
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22 | #include <malloc.h> // malloc_usable_size |
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23 | #include <math.h> // fabsf, fabs, fabsl |
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24 | #include <complex.h> // _Complex_I |
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25 | #include <assert.h> |
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26 | |
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27 | //--------------------------------------- |
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28 | |
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29 | // resize, non-array types |
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30 | forall( dtype T | sized(T) ) T * alloc( T ptr[], size_t dim, char fill ) { |
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31 | size_t olen = malloc_usable_size( ptr ); // current allocation |
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32 | char * nptr = (void *)realloc( (void *)ptr, dim * (size_t)sizeof(T) ); // C realloc |
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33 | size_t nlen = malloc_usable_size( nptr ); // new allocation |
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34 | if ( nlen > olen ) { // larger ? |
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35 | memset( nptr + olen, (int)fill, nlen - olen ); // initialize added storage |
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36 | } // |
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37 | return (T *)nptr; |
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38 | } // alloc |
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39 | |
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40 | // allocation/deallocation and constructor/destructor, non-array types |
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41 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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42 | T * new( Params p ) { |
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43 | return &(*malloc()){ p }; // run constructor |
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44 | } // new |
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45 | |
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46 | forall( dtype T | sized(T) | { void ^?{}( T & ); } ) |
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47 | void delete( T * ptr ) { |
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48 | if ( ptr ) { // ignore null |
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49 | ^(*ptr){}; // run destructor |
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50 | free( ptr ); |
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51 | } // if |
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52 | } // delete |
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53 | |
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54 | forall( dtype T, ttype Params | sized(T) | { void ^?{}( T & ); void delete( Params ); } ) |
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55 | void delete( T * ptr, Params rest ) { |
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56 | if ( ptr ) { // ignore null |
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57 | ^(*ptr){}; // run destructor |
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58 | free( ptr ); |
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59 | } // if |
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60 | delete( rest ); |
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61 | } // delete |
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62 | |
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63 | |
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64 | // allocation/deallocation and constructor/destructor, array types |
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65 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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66 | T * anew( size_t dim, Params p ) { |
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67 | T *arr = alloc( dim ); |
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68 | for ( unsigned int i = 0; i < dim; i += 1 ) { |
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69 | (arr[i]){ p }; // run constructor |
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70 | } // for |
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71 | return arr; |
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72 | } // anew |
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73 | |
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74 | forall( dtype T | sized(T) | { void ^?{}( T & ); } ) |
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75 | void adelete( size_t dim, T arr[] ) { |
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76 | if ( arr ) { // ignore null |
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77 | for ( int i = dim - 1; i >= 0; i -= 1 ) { // reverse allocation order, must be unsigned |
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78 | ^(arr[i]){}; // run destructor |
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79 | } // for |
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80 | free( arr ); |
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81 | } // if |
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82 | } // adelete |
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83 | |
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84 | forall( dtype T | sized(T) | { void ^?{}( T & ); }, ttype Params | { void adelete( Params ); } ) |
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85 | void adelete( size_t dim, T arr[], Params rest ) { |
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86 | if ( arr ) { // ignore null |
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87 | for ( int i = dim - 1; i >= 0; i -= 1 ) { // reverse allocation order, must be unsigned |
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88 | ^(arr[i]){}; // run destructor |
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89 | } // for |
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90 | free( arr ); |
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91 | } // if |
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92 | adelete( rest ); |
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93 | } // adelete |
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94 | |
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95 | //--------------------------------------- |
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96 | |
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97 | float _Complex strto( const char * sptr, char ** eptr ) { |
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98 | float re, im; |
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99 | char * eeptr; |
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100 | re = strtof( sptr, &eeptr ); |
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101 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; } |
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102 | im = strtof( eeptr, &eeptr ); |
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103 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; } |
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104 | if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; } |
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105 | return re + im * _Complex_I; |
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106 | } // strto |
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107 | |
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108 | double _Complex strto( const char * sptr, char ** eptr ) { |
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109 | double re, im; |
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110 | char * eeptr; |
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111 | re = strtod( sptr, &eeptr ); |
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112 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; } |
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113 | im = strtod( eeptr, &eeptr ); |
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114 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; } |
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115 | if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; } |
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116 | return re + im * _Complex_I; |
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117 | } // strto |
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118 | |
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119 | long double _Complex strto( const char * sptr, char ** eptr ) { |
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120 | long double re, im; |
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121 | char * eeptr; |
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122 | re = strtold( sptr, &eeptr ); |
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123 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; } |
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124 | im = strtold( eeptr, &eeptr ); |
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125 | if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; } |
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126 | if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; } |
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127 | return re + im * _Complex_I; |
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128 | } // strto |
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129 | |
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130 | //--------------------------------------- |
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131 | |
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132 | forall( otype E | { int ?<?( E, E ); } ) { |
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133 | E * bsearch( E key, const E * vals, size_t dim ) { |
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134 | int cmp( const void * t1, const void * t2 ) { |
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135 | return *(E *)t1 < *(E *)t2 ? -1 : *(E *)t2 < *(E *)t1 ? 1 : 0; |
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136 | } // cmp |
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137 | return (E *)bsearch( &key, vals, dim, sizeof(E), cmp ); |
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138 | } // bsearch |
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139 | |
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140 | size_t bsearch( E key, const E * vals, size_t dim ) { |
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141 | E * result = bsearch( key, vals, dim ); |
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142 | return result ? result - vals : dim; // pointer subtraction includes sizeof(E) |
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143 | } // bsearch |
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144 | |
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145 | size_t bsearchl( E key, const E * vals, size_t dim ) { |
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146 | size_t l = 0, m, h = dim; |
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147 | while ( l < h ) { |
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148 | m = (l + h) / 2; |
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149 | if ( (E &)(vals[m]) < key ) { // cast away const |
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150 | l = m + 1; |
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151 | } else { |
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152 | h = m; |
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153 | } // if |
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154 | } // while |
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155 | return l; |
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156 | } // bsearchl |
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157 | |
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158 | E * bsearchl( E key, const E * vals, size_t dim ) { |
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159 | size_t posn = bsearchl( key, vals, dim ); |
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160 | return (E *)(&vals[posn]); // cast away const |
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161 | } // bsearchl |
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162 | |
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163 | size_t bsearchu( E key, const E * vals, size_t dim ) { |
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164 | size_t l = 0, m, h = dim; |
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165 | while ( l < h ) { |
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166 | m = (l + h) / 2; |
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167 | if ( ! ( key < (E &)(vals[m]) ) ) { // cast away const |
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168 | l = m + 1; |
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169 | } else { |
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170 | h = m; |
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171 | } // if |
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172 | } // while |
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173 | return l; |
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174 | } // bsearchu |
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175 | |
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176 | E * bsearchu( E key, const E * vals, size_t dim ) { |
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177 | size_t posn = bsearchu( key, vals, dim ); |
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178 | return (E *)(&vals[posn]); |
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179 | } // bsearchu |
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180 | |
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181 | |
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182 | void qsort( E * vals, size_t dim ) { |
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183 | int cmp( const void * t1, const void * t2 ) { |
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184 | return *(E *)t1 < *(E *)t2 ? -1 : *(E *)t2 < *(E *)t1 ? 1 : 0; |
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185 | } // cmp |
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186 | qsort( vals, dim, sizeof(E), cmp ); |
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187 | } // qsort |
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188 | } // distribution |
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189 | |
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190 | |
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191 | forall( otype K, otype E | { int ?<?( K, K ); K getKey( const E & ); } ) { |
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192 | E * bsearch( K key, const E * vals, size_t dim ) { |
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193 | int cmp( const void * t1, const void * t2 ) { |
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194 | return *(K *)t1 < getKey( *(E *)t2 ) ? -1 : getKey( *(E *)t2 ) < *(K *)t1 ? 1 : 0; |
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195 | } // cmp |
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196 | return (E *)bsearch( &key, vals, dim, sizeof(E), cmp ); |
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197 | } // bsearch |
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198 | |
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199 | size_t bsearch( K key, const E * vals, size_t dim ) { |
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200 | E * result = bsearch( key, vals, dim ); |
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201 | return result ? result - vals : dim; // pointer subtraction includes sizeof(E) |
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202 | } // bsearch |
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203 | |
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204 | size_t bsearchl( K key, const E * vals, size_t dim ) { |
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205 | size_t l = 0, m, h = dim; |
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206 | while ( l < h ) { |
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207 | m = (l + h) / 2; |
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208 | if ( getKey( vals[m] ) < key ) { |
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209 | l = m + 1; |
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210 | } else { |
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211 | h = m; |
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212 | } // if |
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213 | } // while |
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214 | return l; |
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215 | } // bsearchl |
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216 | |
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217 | E * bsearchl( K key, const E * vals, size_t dim ) { |
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218 | size_t posn = bsearchl( key, vals, dim ); |
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219 | return (E *)(&vals[posn]); // cast away const |
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220 | } // bsearchl |
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221 | |
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222 | size_t bsearchu( K key, const E * vals, size_t dim ) { |
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223 | size_t l = 0, m, h = dim; |
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224 | while ( l < h ) { |
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225 | m = (l + h) / 2; |
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226 | if ( ! ( key < getKey( vals[m] ) ) ) { |
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227 | l = m + 1; |
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228 | } else { |
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229 | h = m; |
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230 | } // if |
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231 | } // while |
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232 | return l; |
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233 | } // bsearchu |
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234 | |
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235 | E * bsearchu( K key, const E * vals, size_t dim ) { |
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236 | size_t posn = bsearchu( key, vals, dim ); |
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237 | return (E *)(&vals[posn]); |
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238 | } // bsearchu |
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239 | } // distribution |
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240 | |
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241 | //--------------------------------------- |
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242 | |
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243 | [ int, int ] div( int num, int denom ) { div_t qr = div( num, denom ); return [ qr.quot, qr.rem ]; } |
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244 | [ long int, long int ] div( long int num, long int denom ) { ldiv_t qr = ldiv( num, denom ); return [ qr.quot, qr.rem ]; } |
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245 | [ long long int, long long int ] div( long long int num, long long int denom ) { lldiv_t qr = lldiv( num, denom ); return [ qr.quot, qr.rem ]; } |
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246 | forall( otype T | { T ?/?( T, T ); T ?%?( T, T ); } ) |
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247 | [ T, T ] div( T num, T denom ) { return [ num / denom, num % denom ]; } |
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248 | |
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249 | //--------------------------------------- |
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250 | |
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251 | extern "C" { void srandom( unsigned int seed ) { srand48( (long int)seed ); } } // override C version |
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252 | char random( void ) { return (unsigned long int)random(); } |
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253 | char random( char u ) { return random( (unsigned long int)u ); } |
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254 | char random( char l, char u ) { return random( (unsigned long int)l, (unsigned long int)u ); } |
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255 | int random( void ) { return (long int)random(); } |
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256 | int random( int u ) { return random( (long int)u ); } |
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257 | int random( int l, int u ) { return random( (long int)l, (long int)u ); } |
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258 | unsigned int random( void ) { return (unsigned long int)random(); } |
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259 | unsigned int random( unsigned int u ) { return random( (unsigned long int)u ); } |
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260 | unsigned int random( unsigned int l, unsigned int u ) { return random( (unsigned long int)l, (unsigned long int)u ); } |
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261 | extern "C" { long int random( void ) { return mrand48(); } } // override C version |
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262 | long int random( long int u ) { if ( u < 0 ) return random( u, 0 ); else return random( 0, u ); } |
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263 | long int random( long int l, long int u ) { assert( l < u ); return lrand48() % (u - l) + l; } |
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264 | unsigned long int random( void ) { return lrand48(); } |
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265 | unsigned long int random( unsigned long int u ) { return lrand48() % u; } |
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266 | unsigned long int random( unsigned long int l, unsigned long int u ) { assert( l < u ); return lrand48() % (u - l) + l; } |
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267 | float random( void ) { return (float)drand48(); } // cast otherwise float uses lrand48 |
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268 | double random( void ) { return drand48(); } |
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269 | float _Complex random( void ) { return (float)drand48() + (float _Complex)(drand48() * _Complex_I); } |
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270 | double _Complex random( void ) { return drand48() + (double _Complex)(drand48() * _Complex_I); } |
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271 | long double _Complex random( void ) { return (long double)drand48() + (long double _Complex)(drand48() * _Complex_I); } |
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272 | |
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273 | |
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274 | // Local Variables: // |
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275 | // tab-width: 4 // |
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276 | // End: // |
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