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 | // algorithm.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 : Wed Aug 23 20:30:44 2017 |
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13 | // Update Count : 292 |
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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 <stdlib.h> // malloc, free, calloc, realloc, memalign, posix_memalign, bsearch |
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22 | #include <string.h> // memcpy, memset |
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23 | #include <malloc.h> // malloc_usable_size |
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24 | #include <math.h> // fabsf, fabs, fabsl |
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25 | #include <complex.h> // _Complex_I |
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26 | |
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27 | // resize, non-array types |
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28 | forall( dtype T | sized(T) ) T * alloc( T ptr[], size_t dim, char fill ) { |
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29 | size_t olen = malloc_usable_size( ptr ); // current allocation |
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30 | char * nptr = (void *)realloc( (void *)ptr, dim * (size_t)sizeof(T) ); // C realloc |
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31 | size_t nlen = malloc_usable_size( nptr ); // new allocation |
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32 | if ( nlen > olen ) { // larger ? |
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33 | memset( nptr + olen, (int)fill, nlen - olen ); // initialize added storage |
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34 | } // |
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35 | return (T *)nptr; |
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36 | } // alloc |
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37 | |
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38 | // allocation/deallocation and constructor/destructor, non-array types |
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39 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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40 | T * new( Params p ) { |
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41 | return &(*malloc()){ p }; // run constructor |
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42 | } // new |
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43 | |
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44 | forall( dtype T | sized(T) | { void ^?{}( T & ); } ) |
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45 | void delete( T * ptr ) { |
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46 | if ( ptr ) { // ignore null |
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47 | ^(*ptr){}; // run destructor |
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48 | free( ptr ); |
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49 | } // if |
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50 | } // delete |
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51 | |
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52 | forall( dtype T, ttype Params | sized(T) | { void ^?{}( T & ); void delete( Params ); } ) |
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53 | void delete( T * ptr, Params rest ) { |
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54 | if ( ptr ) { // ignore null |
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55 | ^(*ptr){}; // run destructor |
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56 | free( ptr ); |
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57 | } // if |
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58 | delete( rest ); |
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59 | } // delete |
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60 | |
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61 | |
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62 | // allocation/deallocation and constructor/destructor, array types |
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63 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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64 | T * anew( size_t dim, Params p ) { |
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65 | T *arr = alloc( dim ); |
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66 | for ( unsigned int i = 0; i < dim; i += 1 ) { |
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67 | (arr[i]){ p }; // run constructor |
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68 | } // for |
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69 | return arr; |
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70 | } // anew |
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71 | |
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72 | forall( dtype T | sized(T) | { void ^?{}( T & ); } ) |
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73 | void adelete( size_t dim, T arr[] ) { |
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74 | if ( arr ) { // ignore null |
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75 | for ( int i = dim - 1; i >= 0; i -= 1 ) { // reverse allocation order, must be unsigned |
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76 | ^(arr[i]){}; // run destructor |
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77 | } // for |
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78 | free( arr ); |
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79 | } // if |
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80 | } // adelete |
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81 | |
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82 | forall( dtype T | sized(T) | { void ^?{}( T & ); }, ttype Params | { void adelete( Params ); } ) |
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83 | void adelete( size_t dim, T arr[], Params rest ) { |
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84 | if ( arr ) { // ignore null |
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85 | for ( int i = dim - 1; i >= 0; i -= 1 ) { // reverse allocation order, must be unsigned |
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86 | ^(arr[i]){}; // run destructor |
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87 | } // for |
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88 | free( arr ); |
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89 | } // if |
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90 | adelete( rest ); |
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91 | } // adelete |
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92 | |
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93 | //--------------------------------------- |
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94 | |
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95 | int ato( const char * ptr ) { |
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96 | int i; |
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97 | if ( sscanf( ptr, "%d", &i ) == EOF ) {} |
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98 | return i; |
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99 | } // ato |
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100 | |
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101 | unsigned int ato( const char * ptr ) { |
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102 | unsigned int ui; |
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103 | if ( sscanf( ptr, "%u", &ui ) == EOF ) {} |
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104 | return ui; |
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105 | } // ato |
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106 | |
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107 | long int ato( const char * ptr ) { |
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108 | long int li; |
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109 | if ( sscanf( ptr, "%ld", &li ) == EOF ) {} |
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110 | return li; |
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111 | } // ato |
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112 | |
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113 | unsigned long int ato( const char * ptr ) { |
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114 | unsigned long int uli; |
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115 | if ( sscanf( ptr, "%lu", &uli ) == EOF ) {} |
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116 | return uli; |
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117 | } // ato |
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118 | |
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119 | long long int ato( const char * ptr ) { |
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120 | long long int lli; |
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121 | if ( sscanf( ptr, "%lld", &lli ) == EOF ) {} |
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122 | return lli; |
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123 | } // ato |
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124 | |
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125 | unsigned long long int ato( const char * ptr ) { |
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126 | unsigned long long int ulli; |
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127 | if ( sscanf( ptr, "%llu", &ulli ) == EOF ) {} |
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128 | return ulli; |
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129 | } // ato |
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130 | |
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131 | |
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132 | float ato( const char * ptr ) { |
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133 | float f; |
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134 | if ( sscanf( ptr, "%f", &f ) == EOF ) {} |
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135 | return f; |
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136 | } // ato |
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137 | |
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138 | double ato( const char * ptr ) { |
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139 | double d; |
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140 | if ( sscanf( ptr, "%lf", &d ) == EOF ) {} |
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141 | return d; |
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142 | } // ato |
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143 | |
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144 | long double ato( const char * ptr ) { |
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145 | long double ld; |
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146 | if ( sscanf( ptr, "%Lf", &ld ) == EOF ) {} |
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147 | return ld; |
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148 | } // ato |
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149 | |
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150 | |
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151 | float _Complex ato( const char * ptr ) { |
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152 | float re, im; |
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153 | if ( sscanf( ptr, "%g%gi", &re, &im ) == EOF ) {} |
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154 | return re + im * _Complex_I; |
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155 | } // ato |
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156 | |
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157 | double _Complex ato( const char * ptr ) { |
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158 | double re, im; |
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159 | if ( sscanf( ptr, "%lf%lfi", &re, &im ) == EOF ) {} |
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160 | return re + im * _Complex_I; |
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161 | } // ato |
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162 | |
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163 | long double _Complex ato( const char * ptr ) { |
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164 | long double re, im; |
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165 | if ( sscanf( ptr, "%Lf%Lfi", &re, &im ) == EOF ) {} |
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166 | return re + im * _Complex_I; |
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167 | } // ato |
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168 | |
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169 | |
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170 | int strto( const char * sptr, char ** eptr, int base ) { |
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171 | return (int)strtol( sptr, eptr, base ); |
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172 | } // strto |
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173 | |
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174 | unsigned int strto( const char * sptr, char ** eptr, int base ) { |
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175 | return (unsigned int)strtoul( sptr, eptr, base ); |
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176 | } // strto |
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177 | |
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178 | long int strto( const char * sptr, char ** eptr, int base ) { |
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179 | return strtol( sptr, eptr, base ); |
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180 | } // strto |
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181 | |
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182 | unsigned long int strto( const char * sptr, char ** eptr, int base ) { |
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183 | return strtoul( sptr, eptr, base ); |
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184 | } // strto |
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185 | |
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186 | long long int strto( const char * sptr, char ** eptr, int base ) { |
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187 | return strtoll( sptr, eptr, base ); |
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188 | } // strto |
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189 | |
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190 | unsigned long long int strto( const char * sptr, char ** eptr, int base ) { |
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191 | return strtoull( sptr, eptr, base ); |
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192 | } // strto |
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193 | |
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194 | |
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195 | float strto( const char * sptr, char ** eptr ) { |
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196 | return strtof( sptr, eptr ); |
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197 | } // strto |
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198 | |
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199 | double strto( const char * sptr, char ** eptr ) { |
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200 | return strtod( sptr, eptr ); |
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201 | } // strto |
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202 | |
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203 | long double strto( const char * sptr, char ** eptr ) { |
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204 | return strtold( sptr, eptr ); |
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205 | } // strto |
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206 | |
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207 | |
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208 | float _Complex strto( const char * sptr, char ** eptr ) { |
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209 | float re, im; |
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210 | re = strtof( sptr, eptr ); |
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211 | if ( sptr == *eptr ) return 0.0; |
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212 | im = strtof( sptr, eptr ); |
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213 | if ( sptr == *eptr ) return 0.0; |
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214 | return re + im * _Complex_I; |
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215 | } // strto |
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216 | |
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217 | double _Complex strto( const char * sptr, char ** eptr ) { |
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218 | double re, im; |
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219 | re = strtod( sptr, eptr ); |
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220 | if ( sptr == *eptr ) return 0.0; |
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221 | im = strtod( sptr, eptr ); |
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222 | if ( sptr == *eptr ) return 0.0; |
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223 | return re + im * _Complex_I; |
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224 | } // strto |
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225 | |
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226 | long double _Complex strto( const char * sptr, char ** eptr ) { |
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227 | long double re, im; |
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228 | re = strtold( sptr, eptr ); |
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229 | if ( sptr == *eptr ) return 0.0; |
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230 | im = strtold( sptr, eptr ); |
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231 | if ( sptr == *eptr ) return 0.0; |
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232 | return re + im * _Complex_I; |
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233 | } // strto |
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234 | |
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235 | //--------------------------------------- |
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236 | |
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237 | forall( otype T | { int ?<?( T, T ); } ) |
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238 | T * bsearch( T key, const T * arr, size_t dim ) { |
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239 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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240 | return (T *)bsearch( &key, arr, dim, sizeof(T), comp ); |
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241 | } // bsearch |
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242 | |
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243 | forall( otype T | { int ?<?( T, T ); } ) |
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244 | unsigned int bsearch( T key, const T * arr, size_t dim ) { |
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245 | T *result = bsearch( key, arr, dim ); |
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246 | return result ? result - arr : dim; // pointer subtraction includes sizeof(T) |
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247 | } // bsearch |
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248 | |
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249 | forall( otype T | { int ?<?( T, T ); } ) |
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250 | void qsort( const T * arr, size_t dim ) { |
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251 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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252 | qsort( arr, dim, sizeof(T), comp ); |
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253 | } // qsort |
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254 | |
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255 | //--------------------------------------- |
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256 | |
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257 | [ int, int ] div( int num, int denom ) { div_t qr = div( num, denom ); return [ qr.quot, qr.rem ]; } |
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258 | [ 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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259 | [ 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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260 | forall( otype T | { T ?/?( T, T ); T ?%?( T, T ); } ) |
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261 | [ T, T ] div( T num, T denom ) { return [ num / denom, num % denom ]; } |
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262 | |
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263 | //--------------------------------------- |
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264 | |
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265 | unsigned char abs( signed char v ) { return abs( (int)v ); } |
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266 | unsigned long int abs( long int v ) { return labs( v ); } |
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267 | unsigned long long int abs( long long int v ) { return llabs( v ); } |
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268 | float abs( float x ) { return fabsf( x ); } |
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269 | double abs( double x ) { return fabs( x ); } |
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270 | long double abs( long double x ) { return fabsl( x ); } |
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271 | float abs( float _Complex x ) { return cabsf( x ); } |
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272 | double abs( double _Complex x ) { return cabs( x ); } |
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273 | long double abs( long double _Complex x ) { return cabsl( x ); } |
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274 | |
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275 | //--------------------------------------- |
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276 | |
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277 | void rand48seed( long int s ) { srand48( s ); } |
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278 | char rand48( void ) { return mrand48(); } |
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279 | int rand48( void ) { return mrand48(); } |
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280 | unsigned int rand48( void ) { return lrand48(); } |
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281 | long int rand48( void ) { return mrand48(); } |
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282 | unsigned long int rand48( void ) { return lrand48(); } |
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283 | float rand48( void ) { return (float)drand48(); } // otherwise float uses lrand48 |
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284 | double rand48( void ) { return drand48(); } |
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285 | float _Complex rand48( void ) { return (float)drand48() + (float _Complex)(drand48() * _Complex_I); } |
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286 | double _Complex rand48( void ) { return drand48() + (double _Complex)(drand48() * _Complex_I); } |
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287 | long double _Complex rand48( void) { return (long double)drand48() + (long double _Complex)(drand48() * _Complex_I); } |
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288 | |
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289 | //--------------------------------------- |
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290 | |
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291 | forall( otype T | { int ?<?( T, T ); } ) |
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292 | T min( T t1, T t2 ) { |
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293 | return t1 < t2 ? t1 : t2; |
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294 | } // min |
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295 | |
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296 | forall( otype T | { int ?>?( T, T ); } ) |
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297 | T max( T t1, T t2 ) { |
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298 | return t1 > t2 ? t1 : t2; |
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299 | } // max |
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300 | |
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301 | forall( otype T | { T min( T, T ); T max( T, T ); } ) |
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302 | T clamp( T value, T min_val, T max_val ) { |
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303 | return max( min_val, min( value, max_val ) ); |
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304 | } // clamp |
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305 | |
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306 | forall( otype T ) |
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307 | void swap( T & t1, T & t2 ) { |
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308 | T temp = t1; |
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309 | t1 = t2; |
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310 | t2 = temp; |
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311 | } // swap |
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312 | |
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313 | // Local Variables: // |
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314 | // tab-width: 4 // |
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315 | // End: // |
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