[bd85400] | 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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[43385ca] | 7 | // algorithm.c -- |
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[bd85400] | 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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[6065b3aa] | 12 | // Last Modified On : Thu Jun 1 21:52:57 2017 |
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| 13 | // Update Count : 280 |
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[bd85400] | 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 | extern "C" { |
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| 21 | #define _XOPEN_SOURCE 600 // posix_memalign, *rand48 |
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| 22 | #include <stdlib.h> // malloc, free, calloc, realloc, memalign, posix_memalign, bsearch |
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[f3fc631f] | 23 | #include <string.h> // memcpy, memset |
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[bd85400] | 24 | #include <malloc.h> // malloc_usable_size |
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| 25 | #include <math.h> // fabsf, fabs, fabsl |
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[6e991d6] | 26 | #include <complex.h> // _Complex_I |
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[bd85400] | 27 | } // extern "C" |
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| 28 | |
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[f3fc631f] | 29 | // resize, non-array types |
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[6065b3aa] | 30 | forall( dtype T | sized(T) ) T * alloc( T ptr[], size_t dim, char fill ) { |
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[f3fc631f] | 31 | size_t olen = malloc_usable_size( ptr ); // current allocation |
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[6065b3aa] | 32 | char * nptr = (void *)realloc( (void *)ptr, dim * (size_t)sizeof(T) ); // C realloc |
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[f3fc631f] | 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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[aca65621] | 36 | } // |
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[f3fc631f] | 37 | return (T *)nptr; |
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[6065b3aa] | 38 | } // alloc |
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[f3ddc21] | 39 | |
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[6065b3aa] | 40 | // allocation/deallocation and constructor/destructor, non-array types |
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[aca65621] | 41 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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[627f585] | 42 | T * new( Params p ) { |
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[6065b3aa] | 43 | return (malloc()){ p }; // run constructor |
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[f3ddc21] | 44 | } // new |
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[627f585] | 45 | |
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[aca65621] | 46 | forall( dtype T | { void ^?{}( T & ); } ) |
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[627f585] | 47 | void delete( T * ptr ) { |
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[6065b3aa] | 48 | if ( ptr ) { // ignore null |
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[f3fc631f] | 49 | ^ptr{}; // run destructor |
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[f3ddc21] | 50 | free( ptr ); |
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[f3fc631f] | 51 | } // if |
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[f3ddc21] | 52 | } // delete |
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[627f585] | 53 | |
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[aca65621] | 54 | forall( dtype T, ttype Params | { void ^?{}( T & ); void delete( Params ); } ) |
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[bf76eab] | 55 | void delete( T * ptr, Params rest ) { |
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[6065b3aa] | 56 | if ( ptr ) { // ignore null |
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[f3fc631f] | 57 | ^ptr{}; // run destructor |
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[bf76eab] | 58 | free( ptr ); |
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[f3fc631f] | 59 | } // if |
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[bf76eab] | 60 | delete( rest ); |
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[f3ddc21] | 61 | } // delete |
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[bf76eab] | 62 | |
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[6065b3aa] | 63 | |
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| 64 | // allocation/deallocation and constructor/destructor, array types |
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[aca65621] | 65 | forall( dtype T | sized(T), ttype Params | { void ?{}( T &, Params ); } ) |
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[6065b3aa] | 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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[aca65621] | 74 | forall( dtype T | sized(T) | { void ^?{}( T & ); } ) |
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[6065b3aa] | 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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[aca65621] | 84 | forall( dtype T | sized(T) | { void ^?{}( T & ); }, ttype Params | { void adelete( Params ); } ) |
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[6065b3aa] | 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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[bd85400] | 95 | //--------------------------------------- |
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| 96 | |
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| 97 | int ato( const char * ptr ) { |
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| 98 | int i; |
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[6e991d6] | 99 | if ( sscanf( ptr, "%d", &i ) == EOF ) {} |
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[bd85400] | 100 | return i; |
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[f3ddc21] | 101 | } // ato |
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| 102 | |
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[bd85400] | 103 | unsigned int ato( const char * ptr ) { |
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| 104 | unsigned int ui; |
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[6e991d6] | 105 | if ( sscanf( ptr, "%u", &ui ) == EOF ) {} |
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[bd85400] | 106 | return ui; |
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[f3ddc21] | 107 | } // ato |
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| 108 | |
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[bd85400] | 109 | long int ato( const char * ptr ) { |
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| 110 | long int li; |
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[6e991d6] | 111 | if ( sscanf( ptr, "%ld", &li ) == EOF ) {} |
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[bd85400] | 112 | return li; |
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[f3ddc21] | 113 | } // ato |
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| 114 | |
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[bd85400] | 115 | unsigned long int ato( const char * ptr ) { |
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| 116 | unsigned long int uli; |
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[6e991d6] | 117 | if ( sscanf( ptr, "%lu", &uli ) == EOF ) {} |
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[bd85400] | 118 | return uli; |
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[f3ddc21] | 119 | } // ato |
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| 120 | |
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[bd85400] | 121 | long long int ato( const char * ptr ) { |
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| 122 | long long int lli; |
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[6e991d6] | 123 | if ( sscanf( ptr, "%lld", &lli ) == EOF ) {} |
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[bd85400] | 124 | return lli; |
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[f3ddc21] | 125 | } // ato |
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| 126 | |
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[bd85400] | 127 | unsigned long long int ato( const char * ptr ) { |
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| 128 | unsigned long long int ulli; |
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[6e991d6] | 129 | if ( sscanf( ptr, "%llu", &ulli ) == EOF ) {} |
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[bd85400] | 130 | return ulli; |
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[f3ddc21] | 131 | } // ato |
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| 132 | |
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[90c3b1c] | 133 | |
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[bd85400] | 134 | float ato( const char * ptr ) { |
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| 135 | float f; |
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[6e991d6] | 136 | if ( sscanf( ptr, "%f", &f ) == EOF ) {} |
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[bd85400] | 137 | return f; |
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[f3ddc21] | 138 | } // ato |
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| 139 | |
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[bd85400] | 140 | double ato( const char * ptr ) { |
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| 141 | double d; |
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[6e991d6] | 142 | if ( sscanf( ptr, "%lf", &d ) == EOF ) {} |
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[bd85400] | 143 | return d; |
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[f3ddc21] | 144 | } // ato |
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| 145 | |
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[bd85400] | 146 | long double ato( const char * ptr ) { |
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| 147 | long double ld; |
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[6e991d6] | 148 | if ( sscanf( ptr, "%Lf", &ld ) == EOF ) {} |
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[bd85400] | 149 | return ld; |
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[f3ddc21] | 150 | } // ato |
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| 151 | |
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[90c3b1c] | 152 | |
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[bd85400] | 153 | float _Complex ato( const char * ptr ) { |
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| 154 | float re, im; |
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[6e991d6] | 155 | if ( sscanf( ptr, "%g%gi", &re, &im ) == EOF ) {} |
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[bd85400] | 156 | return re + im * _Complex_I; |
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[f3ddc21] | 157 | } // ato |
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| 158 | |
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[bd85400] | 159 | double _Complex ato( const char * ptr ) { |
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| 160 | double re, im; |
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[6e991d6] | 161 | if ( sscanf( ptr, "%lf%lfi", &re, &im ) == EOF ) {} |
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[bd85400] | 162 | return re + im * _Complex_I; |
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[f3ddc21] | 163 | } // ato |
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| 164 | |
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[bd85400] | 165 | long double _Complex ato( const char * ptr ) { |
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| 166 | long double re, im; |
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[6e991d6] | 167 | if ( sscanf( ptr, "%Lf%Lfi", &re, &im ) == EOF ) {} |
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[bd85400] | 168 | return re + im * _Complex_I; |
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[f3ddc21] | 169 | } // ato |
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| 170 | |
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[bd85400] | 171 | |
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| 172 | int strto( const char * sptr, char ** eptr, int base ) { |
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| 173 | return (int)strtol( sptr, eptr, base ); |
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[f3ddc21] | 174 | } // strto |
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| 175 | |
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[bd85400] | 176 | unsigned int strto( const char * sptr, char ** eptr, int base ) { |
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| 177 | return (unsigned int)strtoul( sptr, eptr, base ); |
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[f3ddc21] | 178 | } // strto |
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| 179 | |
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[bd85400] | 180 | long int strto( const char * sptr, char ** eptr, int base ) { |
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| 181 | return strtol( sptr, eptr, base ); |
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[f3ddc21] | 182 | } // strto |
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| 183 | |
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[bd85400] | 184 | unsigned long int strto( const char * sptr, char ** eptr, int base ) { |
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| 185 | return strtoul( sptr, eptr, base ); |
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[f3ddc21] | 186 | } // strto |
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| 187 | |
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[bd85400] | 188 | long long int strto( const char * sptr, char ** eptr, int base ) { |
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| 189 | return strtoll( sptr, eptr, base ); |
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[f3ddc21] | 190 | } // strto |
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| 191 | |
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[bd85400] | 192 | unsigned long long int strto( const char * sptr, char ** eptr, int base ) { |
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| 193 | return strtoull( sptr, eptr, base ); |
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[f3ddc21] | 194 | } // strto |
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| 195 | |
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[90c3b1c] | 196 | |
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[bd85400] | 197 | float strto( const char * sptr, char ** eptr ) { |
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| 198 | return strtof( sptr, eptr ); |
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[f3ddc21] | 199 | } // strto |
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| 200 | |
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[bd85400] | 201 | double strto( const char * sptr, char ** eptr ) { |
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| 202 | return strtod( sptr, eptr ); |
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[f3ddc21] | 203 | } // strto |
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| 204 | |
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[bd85400] | 205 | long double strto( const char * sptr, char ** eptr ) { |
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| 206 | return strtold( sptr, eptr ); |
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[f3ddc21] | 207 | } // strto |
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| 208 | |
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[90c3b1c] | 209 | |
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[bd85400] | 210 | float _Complex strto( const char * sptr, char ** eptr ) { |
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| 211 | float re, im; |
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| 212 | re = strtof( sptr, eptr ); |
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| 213 | if ( sptr == *eptr ) return 0.0; |
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| 214 | im = strtof( sptr, eptr ); |
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| 215 | if ( sptr == *eptr ) return 0.0; |
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| 216 | return re + im * _Complex_I; |
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[f3ddc21] | 217 | } // strto |
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| 218 | |
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[bd85400] | 219 | double _Complex strto( const char * sptr, char ** eptr ) { |
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| 220 | double re, im; |
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| 221 | re = strtod( sptr, eptr ); |
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| 222 | if ( sptr == *eptr ) return 0.0; |
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| 223 | im = strtod( sptr, eptr ); |
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| 224 | if ( sptr == *eptr ) return 0.0; |
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| 225 | return re + im * _Complex_I; |
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[f3ddc21] | 226 | } // strto |
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| 227 | |
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[bd85400] | 228 | long double _Complex strto( const char * sptr, char ** eptr ) { |
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| 229 | long double re, im; |
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| 230 | re = strtold( sptr, eptr ); |
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| 231 | if ( sptr == *eptr ) return 0.0; |
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| 232 | im = strtold( sptr, eptr ); |
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| 233 | if ( sptr == *eptr ) return 0.0; |
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| 234 | return re + im * _Complex_I; |
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[f3ddc21] | 235 | } // strto |
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[bd85400] | 236 | |
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| 237 | //--------------------------------------- |
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| 238 | |
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[4040425] | 239 | forall( otype T | { int ?<?( T, T ); } ) |
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[f3fc631f] | 240 | T * bsearch( T key, const T * arr, size_t dim ) { |
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[bd85400] | 241 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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[f3fc631f] | 242 | return (T *)bsearch( &key, arr, dim, sizeof(T), comp ); |
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[bd85400] | 243 | } // bsearch |
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| 244 | |
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[707446a] | 245 | forall( otype T | { int ?<?( T, T ); } ) |
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[f3fc631f] | 246 | unsigned int bsearch( T key, const T * arr, size_t dim ) { |
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| 247 | T *result = bsearch( key, arr, dim ); |
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| 248 | return result ? result - arr : dim; // pointer subtraction includes sizeof(T) |
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[707446a] | 249 | } // bsearch |
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| 250 | |
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[4040425] | 251 | forall( otype T | { int ?<?( T, T ); } ) |
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[f3fc631f] | 252 | void qsort( const T * arr, size_t dim ) { |
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[bd85400] | 253 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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[f3fc631f] | 254 | qsort( arr, dim, sizeof(T), comp ); |
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[bd85400] | 255 | } // qsort |
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| 256 | |
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| 257 | //--------------------------------------- |
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| 258 | |
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[43385ca] | 259 | forall( otype T | { T ?/?( T, T ); T ?%?( T, T ); } ) |
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| 260 | [ T, T ] div( T t1, T t2 ) { return [ t1 / t2, t1 % t2 ]; } |
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[bd85400] | 261 | |
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| 262 | //--------------------------------------- |
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| 263 | |
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[c3ebf37] | 264 | unsigned char abs( signed char v ) { return abs( (int)v ); } |
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| 265 | unsigned long int abs( long int v ) { return labs( v ); } |
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| 266 | unsigned long long int abs( long long int v ) { return llabs( v ); } |
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[6e991d6] | 267 | float abs( float x ) { return fabsf( x ); } |
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| 268 | double abs( double x ) { return fabs( x ); } |
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| 269 | long double abs( long double x ) { return fabsl( x ); } |
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| 270 | float abs( float _Complex x ) { return cabsf( x ); } |
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| 271 | double abs( double _Complex x ) { return cabs( x ); } |
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| 272 | long double abs( long double _Complex x ) { return cabsl( x ); } |
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[53ba273] | 273 | |
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| 274 | //--------------------------------------- |
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| 275 | |
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[0438091] | 276 | void rand48seed( long int s ) { srand48( s ); } |
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[8dc51c8] | 277 | char rand48( void ) { return mrand48(); } |
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| 278 | int rand48( void ) { return mrand48(); } |
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| 279 | unsigned int rand48( void ) { return lrand48(); } |
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| 280 | long int rand48( void ) { return mrand48(); } |
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| 281 | unsigned long int rand48( void ) { return lrand48(); } |
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| 282 | float rand48( void ) { return (float)drand48(); } // otherwise float uses lrand48 |
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| 283 | double rand48( void ) { return drand48(); } |
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| 284 | float _Complex rand48( void ) { return (float)drand48() + (float _Complex)(drand48() * _Complex_I); } |
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| 285 | double _Complex rand48( void ) { return drand48() + (double _Complex)(drand48() * _Complex_I); } |
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| 286 | long double _Complex rand48( void) { return (long double)drand48() + (long double _Complex)(drand48() * _Complex_I); } |
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[bd85400] | 287 | |
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| 288 | //--------------------------------------- |
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| 289 | |
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[4040425] | 290 | forall( otype T | { int ?<?( T, T ); } ) |
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[a797e2b1] | 291 | T min( T t1, T t2 ) { |
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[bd85400] | 292 | return t1 < t2 ? t1 : t2; |
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| 293 | } // min |
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| 294 | |
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[4040425] | 295 | forall( otype T | { int ?>?( T, T ); } ) |
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[a797e2b1] | 296 | T max( T t1, T t2 ) { |
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[bd85400] | 297 | return t1 > t2 ? t1 : t2; |
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| 298 | } // max |
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| 299 | |
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[a9f2c13] | 300 | forall( otype T | { T min( T, T ); T max( T, T ); } ) |
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[a797e2b1] | 301 | T clamp( T value, T min_val, T max_val ) { |
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[a9f2c13] | 302 | return max( min_val, min( value, max_val ) ); |
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| 303 | } // clamp |
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| 304 | |
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[4040425] | 305 | forall( otype T ) |
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[bd85400] | 306 | void swap( T * t1, T * t2 ) { |
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| 307 | T temp = *t1; |
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| 308 | *t1 = *t2; |
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| 309 | *t2 = temp; |
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| 310 | } // swap |
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| 311 | |
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| 312 | // Local Variables: // |
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| 313 | // tab-width: 4 // |
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| 314 | // End: // |
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