[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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[f3ddc21] | 12 | // Last Modified On : Tue May 9 08:43:00 2017 |
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| 13 | // Update Count : 191 |
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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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| 23 | #include <string.h> // memset |
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| 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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[f3ddc21] | 29 | forall( dtype T | sized(T) ) T * malloc( void ) { // type-safe |
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| 30 | return (T *)(void *)malloc( (size_t)sizeof(T) ); |
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[bd85400] | 31 | } // malloc |
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[f3ddc21] | 32 | |
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| 33 | forall( dtype T | sized(T) ) T * malloc( char fill ) { // initial with fill value (like calloc) |
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| 34 | T * ptr = (T *)(void *)malloc( (size_t)sizeof(T) ); |
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[6b6597c] | 35 | return memset( ptr, (int)fill, sizeof(T) ); |
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[bd85400] | 36 | } // malloc |
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| 37 | |
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[f3ddc21] | 38 | forall( dtype T | sized(T) ) T * malloc( T * ptr, size_t size ) { // alternative realloc |
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| 39 | return (T *)realloc( ptr, size ); |
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| 40 | } // malloc |
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| 41 | |
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| 42 | forall( dtype T | sized(T) ) T * malloc( T * ptr, size_t size, unsigned char fill ) { // alternative realloc with fill value |
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| 43 | return (T *)realloc( ptr, size, fill ); |
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| 44 | } // malloc |
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| 45 | |
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| 46 | |
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| 47 | forall( dtype T | sized(T) ) T * calloc( size_t nmemb ) { // type-safe array initialization with fill 0 |
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[45161b4d] | 48 | return (T *)calloc( nmemb, sizeof(T) ); |
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[bd85400] | 49 | } // calloc |
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| 50 | |
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[f3ddc21] | 51 | |
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| 52 | forall( dtype T | sized(T) ) T * realloc( T * ptr, size_t size ) { // type-safe |
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[bd85400] | 53 | return (T *)(void *)realloc( (void *)ptr, size ); |
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| 54 | } // realloc |
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[f3ddc21] | 55 | |
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| 56 | forall( dtype T | sized(T) ) T * realloc( T * ptr, size_t size, unsigned char fill ) { // alternative realloc with fill value |
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[bd85400] | 57 | char * nptr = (T *)(void *)realloc( (void *)ptr, size ); |
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| 58 | size_t unused = malloc_usable_size( nptr ); |
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| 59 | memset( nptr + size - unused, (int)fill, unused ); // initialize any new storage |
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| 60 | return nptr; |
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| 61 | } // realloc |
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| 62 | |
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| 63 | |
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[f3ddc21] | 64 | forall( dtype T | sized(T) ) T * aligned_alloc( size_t alignment ) { // aligned allocation |
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[bd85400] | 65 | return (T *)memalign( alignment, sizeof(T) ); |
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| 66 | } // aligned_alloc |
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| 67 | |
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[59239b8] | 68 | forall( dtype T | sized(T) ) T * memalign( size_t alignment ) { |
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[bd85400] | 69 | return (T *)memalign( alignment, sizeof(T) ); |
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| 70 | } // memalign |
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| 71 | |
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[59239b8] | 72 | forall( dtype T | sized(T) ) int posix_memalign( T ** ptr, size_t alignment ) { |
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[bd85400] | 73 | return posix_memalign( (void **)ptr, alignment, sizeof(T) ); |
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| 74 | } // posix_memalign |
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| 75 | |
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[f3ddc21] | 76 | |
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| 77 | forall( dtype T, ttype Params | sized(T) | { void ?{}( T *, Params ); } ) // new |
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[627f585] | 78 | T * new( Params p ) { |
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[02d241f] | 79 | return ((T *)malloc()){ p }; |
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[f3ddc21] | 80 | } // new |
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[627f585] | 81 | |
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[f3ddc21] | 82 | forall( dtype T | { void ^?{}(T *); } ) // delete |
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[627f585] | 83 | void delete( T * ptr ) { |
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[f3ddc21] | 84 | if ( ptr ) { |
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| 85 | ^ptr{}; |
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| 86 | free( ptr ); |
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| 87 | } |
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| 88 | } // delete |
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[627f585] | 89 | |
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[bf76eab] | 90 | forall( dtype T, ttype Params | { void ^?{}(T *); void delete(Params); } ) |
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| 91 | void delete( T * ptr, Params rest ) { |
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| 92 | if ( ptr ) { |
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| 93 | ^ptr{}; |
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| 94 | free( ptr ); |
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| 95 | } |
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| 96 | delete( rest ); |
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[f3ddc21] | 97 | } // delete |
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[bf76eab] | 98 | |
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[bd85400] | 99 | //--------------------------------------- |
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| 100 | |
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| 101 | int ato( const char * ptr ) { |
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| 102 | int i; |
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[6e991d6] | 103 | if ( sscanf( ptr, "%d", &i ) == EOF ) {} |
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[bd85400] | 104 | return i; |
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[f3ddc21] | 105 | } // ato |
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| 106 | |
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[bd85400] | 107 | unsigned int ato( const char * ptr ) { |
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| 108 | unsigned int ui; |
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[6e991d6] | 109 | if ( sscanf( ptr, "%u", &ui ) == EOF ) {} |
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[bd85400] | 110 | return ui; |
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[f3ddc21] | 111 | } // ato |
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| 112 | |
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[bd85400] | 113 | long int ato( const char * ptr ) { |
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| 114 | long int li; |
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[6e991d6] | 115 | if ( sscanf( ptr, "%ld", &li ) == EOF ) {} |
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[bd85400] | 116 | return li; |
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[f3ddc21] | 117 | } // ato |
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| 118 | |
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[bd85400] | 119 | unsigned long int ato( const char * ptr ) { |
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| 120 | unsigned long int uli; |
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[6e991d6] | 121 | if ( sscanf( ptr, "%lu", &uli ) == EOF ) {} |
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[bd85400] | 122 | return uli; |
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[f3ddc21] | 123 | } // ato |
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| 124 | |
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[bd85400] | 125 | long long int ato( const char * ptr ) { |
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| 126 | long long int lli; |
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[6e991d6] | 127 | if ( sscanf( ptr, "%lld", &lli ) == EOF ) {} |
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[bd85400] | 128 | return lli; |
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[f3ddc21] | 129 | } // ato |
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| 130 | |
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[bd85400] | 131 | unsigned long long int ato( const char * ptr ) { |
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| 132 | unsigned long long int ulli; |
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[6e991d6] | 133 | if ( sscanf( ptr, "%llu", &ulli ) == EOF ) {} |
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[bd85400] | 134 | return ulli; |
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[f3ddc21] | 135 | } // ato |
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| 136 | |
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[90c3b1c] | 137 | |
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[bd85400] | 138 | float ato( const char * ptr ) { |
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| 139 | float f; |
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[6e991d6] | 140 | if ( sscanf( ptr, "%f", &f ) == EOF ) {} |
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[bd85400] | 141 | return f; |
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[f3ddc21] | 142 | } // ato |
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| 143 | |
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[bd85400] | 144 | double ato( const char * ptr ) { |
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| 145 | double d; |
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[6e991d6] | 146 | if ( sscanf( ptr, "%lf", &d ) == EOF ) {} |
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[bd85400] | 147 | return d; |
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[f3ddc21] | 148 | } // ato |
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| 149 | |
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[bd85400] | 150 | long double ato( const char * ptr ) { |
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| 151 | long double ld; |
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[6e991d6] | 152 | if ( sscanf( ptr, "%Lf", &ld ) == EOF ) {} |
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[bd85400] | 153 | return ld; |
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[f3ddc21] | 154 | } // ato |
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| 155 | |
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[90c3b1c] | 156 | |
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[bd85400] | 157 | float _Complex ato( const char * ptr ) { |
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| 158 | float re, im; |
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[6e991d6] | 159 | if ( sscanf( ptr, "%g%gi", &re, &im ) == EOF ) {} |
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[bd85400] | 160 | return re + im * _Complex_I; |
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[f3ddc21] | 161 | } // ato |
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| 162 | |
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[bd85400] | 163 | double _Complex ato( const char * ptr ) { |
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| 164 | double re, im; |
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[6e991d6] | 165 | if ( sscanf( ptr, "%lf%lfi", &re, &im ) == EOF ) {} |
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[bd85400] | 166 | return re + im * _Complex_I; |
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[f3ddc21] | 167 | } // ato |
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| 168 | |
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[bd85400] | 169 | long double _Complex ato( const char * ptr ) { |
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| 170 | long double re, im; |
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[6e991d6] | 171 | if ( sscanf( ptr, "%Lf%Lfi", &re, &im ) == EOF ) {} |
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[bd85400] | 172 | return re + im * _Complex_I; |
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[f3ddc21] | 173 | } // ato |
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| 174 | |
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[bd85400] | 175 | |
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| 176 | int strto( const char * sptr, char ** eptr, int base ) { |
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| 177 | return (int)strtol( sptr, eptr, base ); |
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[f3ddc21] | 178 | } // strto |
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| 179 | |
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[bd85400] | 180 | unsigned int strto( const char * sptr, char ** eptr, int base ) { |
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| 181 | return (unsigned int)strtoul( sptr, eptr, base ); |
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[f3ddc21] | 182 | } // strto |
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| 183 | |
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[bd85400] | 184 | long int strto( const char * sptr, char ** eptr, int base ) { |
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| 185 | return strtol( sptr, eptr, base ); |
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[f3ddc21] | 186 | } // strto |
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| 187 | |
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[bd85400] | 188 | unsigned long int strto( const char * sptr, char ** eptr, int base ) { |
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| 189 | return strtoul( sptr, eptr, base ); |
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[f3ddc21] | 190 | } // strto |
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| 191 | |
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[bd85400] | 192 | long long int strto( const char * sptr, char ** eptr, int base ) { |
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| 193 | return strtoll( sptr, eptr, base ); |
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[f3ddc21] | 194 | } // strto |
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| 195 | |
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[bd85400] | 196 | unsigned long long int strto( const char * sptr, char ** eptr, int base ) { |
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| 197 | return strtoull( sptr, eptr, base ); |
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[f3ddc21] | 198 | } // strto |
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| 199 | |
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[90c3b1c] | 200 | |
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[bd85400] | 201 | float strto( const char * sptr, char ** eptr ) { |
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| 202 | return strtof( sptr, eptr ); |
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[f3ddc21] | 203 | } // strto |
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| 204 | |
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[bd85400] | 205 | double strto( const char * sptr, char ** eptr ) { |
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| 206 | return strtod( sptr, eptr ); |
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[f3ddc21] | 207 | } // strto |
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| 208 | |
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[bd85400] | 209 | long double strto( const char * sptr, char ** eptr ) { |
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| 210 | return strtold( sptr, eptr ); |
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[f3ddc21] | 211 | } // strto |
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| 212 | |
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[90c3b1c] | 213 | |
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[bd85400] | 214 | float _Complex strto( const char * sptr, char ** eptr ) { |
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| 215 | float re, im; |
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| 216 | re = strtof( sptr, eptr ); |
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| 217 | if ( sptr == *eptr ) return 0.0; |
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| 218 | im = strtof( sptr, eptr ); |
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| 219 | if ( sptr == *eptr ) return 0.0; |
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| 220 | return re + im * _Complex_I; |
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[f3ddc21] | 221 | } // strto |
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| 222 | |
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[bd85400] | 223 | double _Complex strto( const char * sptr, char ** eptr ) { |
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| 224 | double re, im; |
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| 225 | re = strtod( sptr, eptr ); |
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| 226 | if ( sptr == *eptr ) return 0.0; |
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| 227 | im = strtod( sptr, eptr ); |
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| 228 | if ( sptr == *eptr ) return 0.0; |
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| 229 | return re + im * _Complex_I; |
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[f3ddc21] | 230 | } // strto |
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| 231 | |
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[bd85400] | 232 | long double _Complex strto( const char * sptr, char ** eptr ) { |
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| 233 | long double re, im; |
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| 234 | re = strtold( sptr, eptr ); |
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| 235 | if ( sptr == *eptr ) return 0.0; |
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| 236 | im = strtold( sptr, eptr ); |
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| 237 | if ( sptr == *eptr ) return 0.0; |
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| 238 | return re + im * _Complex_I; |
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[f3ddc21] | 239 | } // strto |
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[bd85400] | 240 | |
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| 241 | //--------------------------------------- |
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| 242 | |
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[4040425] | 243 | forall( otype T | { int ?<?( T, T ); } ) |
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[a797e2b1] | 244 | T * bsearch( T key, const T * arr, size_t dimension ) { |
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[bd85400] | 245 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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| 246 | return (T *)bsearch( &key, arr, dimension, sizeof(T), comp ); |
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| 247 | } // bsearch |
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| 248 | |
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[707446a] | 249 | forall( otype T | { int ?<?( T, T ); } ) |
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| 250 | unsigned int bsearch( T key, const T * arr, size_t dimension ) { |
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[02d241f] | 251 | T *result = bsearch( key, arr, dimension ); |
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[707446a] | 252 | return result ? result - arr : dimension; // pointer subtraction includes sizeof(T) |
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| 253 | } // bsearch |
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| 254 | |
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[4040425] | 255 | forall( otype T | { int ?<?( T, T ); } ) |
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[bd85400] | 256 | void qsort( const T * arr, size_t dimension ) { |
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| 257 | int comp( const void * t1, const void * t2 ) { return *(T *)t1 < *(T *)t2 ? -1 : *(T *)t2 < *(T *)t1 ? 1 : 0; } |
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| 258 | qsort( arr, dimension, sizeof(T), comp ); |
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| 259 | } // qsort |
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| 260 | |
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| 261 | //--------------------------------------- |
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| 262 | |
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[43385ca] | 263 | forall( otype T | { T ?/?( T, T ); T ?%?( T, T ); } ) |
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| 264 | [ T, T ] div( T t1, T t2 ) { return [ t1 / t2, t1 % t2 ]; } |
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[bd85400] | 265 | |
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| 266 | //--------------------------------------- |
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| 267 | |
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[c3ebf37] | 268 | unsigned char abs( signed char v ) { return abs( (int)v ); } |
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| 269 | unsigned long int abs( long int v ) { return labs( v ); } |
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| 270 | unsigned long long int abs( long long int v ) { return llabs( v ); } |
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[6e991d6] | 271 | float abs( float x ) { return fabsf( x ); } |
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| 272 | double abs( double x ) { return fabs( x ); } |
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| 273 | long double abs( long double x ) { return fabsl( x ); } |
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| 274 | float abs( float _Complex x ) { return cabsf( x ); } |
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| 275 | double abs( double _Complex x ) { return cabs( x ); } |
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| 276 | long double abs( long double _Complex x ) { return cabsl( x ); } |
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[53ba273] | 277 | |
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| 278 | //--------------------------------------- |
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| 279 | |
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[0438091] | 280 | void rand48seed( long int s ) { srand48( s ); } |
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[3cfe27f] | 281 | char rand48() { return mrand48(); } |
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[0438091] | 282 | int rand48() { return mrand48(); } |
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| 283 | unsigned int rand48() { return lrand48(); } |
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| 284 | long int rand48() { return mrand48(); } |
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| 285 | unsigned long int rand48() { return lrand48(); } |
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| 286 | float rand48() { return (float)drand48(); } // otherwise float uses lrand48 |
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| 287 | double rand48() { return drand48(); } |
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| 288 | float _Complex rand48() { return (float)drand48() + (float _Complex)(drand48() * _Complex_I); } |
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| 289 | double _Complex rand48() { return drand48() + (double _Complex)(drand48() * _Complex_I); } |
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| 290 | long double _Complex rand48() { return (long double)drand48() + (long double _Complex)(drand48() * _Complex_I); } |
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[bd85400] | 291 | |
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| 292 | //--------------------------------------- |
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| 293 | |
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[4040425] | 294 | forall( otype T | { int ?<?( T, T ); } ) |
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[a797e2b1] | 295 | T min( T t1, T t2 ) { |
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[bd85400] | 296 | return t1 < t2 ? t1 : t2; |
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| 297 | } // min |
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| 298 | |
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[4040425] | 299 | forall( otype T | { int ?>?( T, T ); } ) |
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[a797e2b1] | 300 | T max( T t1, T t2 ) { |
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[bd85400] | 301 | return t1 > t2 ? t1 : t2; |
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| 302 | } // max |
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| 303 | |
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[a9f2c13] | 304 | forall( otype T | { T min( T, T ); T max( T, T ); } ) |
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[a797e2b1] | 305 | T clamp( T value, T min_val, T max_val ) { |
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[a9f2c13] | 306 | return max( min_val, min( value, max_val ) ); |
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| 307 | } // clamp |
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| 308 | |
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[4040425] | 309 | forall( otype T ) |
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[bd85400] | 310 | void swap( T * t1, T * t2 ) { |
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| 311 | T temp = *t1; |
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| 312 | *t1 = *t2; |
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| 313 | *t2 = temp; |
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| 314 | } // swap |
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| 315 | |
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| 316 | // Local Variables: // |
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| 317 | // tab-width: 4 // |
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| 318 | // End: // |
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