| 1 | //
|
|---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
|
|---|
| 3 | //
|
|---|
| 4 | // The contents of this file are covered under the licence agreement in the
|
|---|
| 5 | // file "LICENCE" distributed with Cforall.
|
|---|
| 6 | //
|
|---|
| 7 | // stdlib --
|
|---|
| 8 | //
|
|---|
| 9 | // Author : Peter A. Buhr
|
|---|
| 10 | // Created On : Thu Jan 28 17:12:35 2016
|
|---|
| 11 | // Last Modified By : Peter A. Buhr
|
|---|
| 12 | // Last Modified On : Thu Aug 25 18:07:06 2022
|
|---|
| 13 | // Update Count : 645
|
|---|
| 14 | //
|
|---|
| 15 |
|
|---|
| 16 | #pragma once
|
|---|
| 17 |
|
|---|
| 18 | #include "bits/defs.hfa" // OPTIONAL_THREAD
|
|---|
| 19 | #include "bits/align.hfa" // libAlign
|
|---|
| 20 | #include "bits/random.hfa" // prng
|
|---|
| 21 |
|
|---|
| 22 | #include <stdlib.h> // *alloc, strto*, ato*
|
|---|
| 23 | #include <heap.hfa>
|
|---|
| 24 |
|
|---|
| 25 |
|
|---|
| 26 | // Reduce includes by explicitly defining these routines.
|
|---|
| 27 | extern "C" {
|
|---|
| 28 | void * memalign( size_t alignment, size_t size ); // malloc.h
|
|---|
| 29 | void * pvalloc( size_t size ); // malloc.h
|
|---|
| 30 | void * memset( void * dest, int fill, size_t size ); // string.h
|
|---|
| 31 | void * memcpy( void * dest, const void * src, size_t size ); // string.h
|
|---|
| 32 | } // extern "C"
|
|---|
| 33 |
|
|---|
| 34 | //---------------------------------------
|
|---|
| 35 |
|
|---|
| 36 | #ifndef EXIT_FAILURE
|
|---|
| 37 | #define EXIT_FAILURE 1 // failing exit status
|
|---|
| 38 | #define EXIT_SUCCESS 0 // successful exit status
|
|---|
| 39 | #endif // ! EXIT_FAILURE
|
|---|
| 40 |
|
|---|
| 41 | //---------------------------------------
|
|---|
| 42 |
|
|---|
| 43 | #include "common.hfa"
|
|---|
| 44 |
|
|---|
| 45 | //---------------------------------------
|
|---|
| 46 |
|
|---|
| 47 | static inline forall( T & | sized(T) ) {
|
|---|
| 48 | // CFA safe equivalents, i.e., implicit size specification
|
|---|
| 49 |
|
|---|
| 50 | T * malloc( void ) {
|
|---|
| 51 | if ( _Alignof(T) <= libAlign() ) return (T *)malloc( sizeof(T) ); // C allocation
|
|---|
| 52 | else return (T *)memalign( _Alignof(T), sizeof(T) );
|
|---|
| 53 | } // malloc
|
|---|
| 54 |
|
|---|
| 55 | T * aalloc( size_t dim ) {
|
|---|
| 56 | if ( _Alignof(T) <= libAlign() ) return (T *)aalloc( dim, sizeof(T) ); // C allocation
|
|---|
| 57 | else return (T *)amemalign( _Alignof(T), dim, sizeof(T) );
|
|---|
| 58 | } // aalloc
|
|---|
| 59 |
|
|---|
| 60 | T * calloc( size_t dim ) {
|
|---|
| 61 | if ( _Alignof(T) <= libAlign() ) return (T *)calloc( dim, sizeof(T) ); // C allocation
|
|---|
| 62 | else return (T *)cmemalign( _Alignof(T), dim, sizeof(T) );
|
|---|
| 63 | } // calloc
|
|---|
| 64 |
|
|---|
| 65 | T * resize( T * ptr, size_t size ) { // CFA resize, eliminate return-type cast
|
|---|
| 66 | if ( _Alignof(T) <= libAlign() ) return (T *)resize( (void *)ptr, size ); // CFA resize
|
|---|
| 67 | else return (T *)resize( (void *)ptr, _Alignof(T), size ); // CFA resize
|
|---|
| 68 | } // resize
|
|---|
| 69 |
|
|---|
| 70 | T * realloc( T * ptr, size_t size ) { // CFA realloc, eliminate return-type cast
|
|---|
| 71 | if ( _Alignof(T) <= libAlign() ) return (T *)realloc( (void *)ptr, size ); // C realloc
|
|---|
| 72 | else return (T *)realloc( (void *)ptr, _Alignof(T), size ); // CFA realloc
|
|---|
| 73 | } // realloc
|
|---|
| 74 |
|
|---|
| 75 | T * memalign( size_t align ) {
|
|---|
| 76 | return (T *)memalign( align, sizeof(T) ); // C memalign
|
|---|
| 77 | } // memalign
|
|---|
| 78 |
|
|---|
| 79 | T * amemalign( size_t align, size_t dim ) {
|
|---|
| 80 | return (T *)amemalign( align, dim, sizeof(T) ); // CFA amemalign
|
|---|
| 81 | } // amemalign
|
|---|
| 82 |
|
|---|
| 83 | T * cmemalign( size_t align, size_t dim ) {
|
|---|
| 84 | return (T *)cmemalign( align, dim, sizeof(T) ); // CFA cmemalign
|
|---|
| 85 | } // cmemalign
|
|---|
| 86 |
|
|---|
| 87 | T * aligned_alloc( size_t align ) {
|
|---|
| 88 | return (T *)aligned_alloc( align, sizeof(T) ); // C aligned_alloc
|
|---|
| 89 | } // aligned_alloc
|
|---|
| 90 |
|
|---|
| 91 | int posix_memalign( T ** ptr, size_t align ) {
|
|---|
| 92 | return posix_memalign( (void **)ptr, align, sizeof(T) ); // C posix_memalign
|
|---|
| 93 | } // posix_memalign
|
|---|
| 94 |
|
|---|
| 95 | T * valloc( void ) {
|
|---|
| 96 | return (T *)valloc( sizeof(T) ); // C valloc
|
|---|
| 97 | } // valloc
|
|---|
| 98 |
|
|---|
| 99 | T * pvalloc( void ) {
|
|---|
| 100 | return (T *)pvalloc( sizeof(T) ); // C pvalloc
|
|---|
| 101 | } // pvalloc
|
|---|
| 102 | } // distribution
|
|---|
| 103 |
|
|---|
| 104 | /*
|
|---|
| 105 | FIX ME : fix alloc interface after Ticker Number 214 is resolved, define and add union to S_fill. Then, modify postfix-fill functions to support T * with nmemb, char, and T object of any size. Finally, change alloc_internal.
|
|---|
| 106 | Or, just follow the instructions below for that.
|
|---|
| 107 |
|
|---|
| 108 | 1. Replace the current forall-block that contains defintions of S_fill and S_realloc with following:
|
|---|
| 109 | forall( T & | sized(T) ) {
|
|---|
| 110 | union U_fill { char c; T * a; T t; };
|
|---|
| 111 | struct S_fill { char tag; U_fill(T) fill; };
|
|---|
| 112 | struct S_realloc { inline T *; };
|
|---|
| 113 | }
|
|---|
| 114 |
|
|---|
| 115 | 2. Replace all current postfix-fill functions with following for updated S_fill:
|
|---|
| 116 | S_fill(T) ?`fill( char a ) { S_fill(T) ret = {'c'}; ret.fill.c = a; return ret; }
|
|---|
| 117 | S_fill(T) ?`fill( T a ) { S_fill(T) ret = {'t'}; memcpy(&ret.fill.t, &a, sizeof(T)); return ret; }
|
|---|
| 118 | S_fill(T) ?`fill( T a[], size_t nmemb ) { S_fill(T) ret = {'a', nmemb}; ret.fill.a = a; return ret; }
|
|---|
| 119 |
|
|---|
| 120 | 3. Replace the alloc_internal$ function which is outside ttype forall-block with following function:
|
|---|
| 121 | T * alloc_internal$( void * Resize, T * Realloc, size_t Align, size_t Dim, S_fill(T) Fill) {
|
|---|
| 122 | T * ptr = NULL;
|
|---|
| 123 | size_t size = sizeof(T);
|
|---|
| 124 | size_t copy_end = 0;
|
|---|
| 125 |
|
|---|
| 126 | if(Resize) {
|
|---|
| 127 | ptr = (T*) (void *) resize( (int *)Resize, Align, Dim * size );
|
|---|
| 128 | } else if (Realloc) {
|
|---|
| 129 | if (Fill.tag != '0') copy_end = min(malloc_size( Realloc ), Dim * size);
|
|---|
| 130 | ptr = (T*) (void *) realloc( (int *)Realloc, Align, Dim * size );
|
|---|
| 131 | } else {
|
|---|
| 132 | ptr = (T*) (void *) memalign( Align, Dim * size );
|
|---|
| 133 | }
|
|---|
| 134 |
|
|---|
| 135 | if(Fill.tag == 'c') {
|
|---|
| 136 | memset( (char *)ptr + copy_end, (int)Fill.fill.c, Dim * size - copy_end );
|
|---|
| 137 | } else if(Fill.tag == 't') {
|
|---|
| 138 | for ( int i = copy_end; i <= Dim * size - size ; i += size ) {
|
|---|
| 139 | memcpy( (char *)ptr + i, &Fill.fill.t, size );
|
|---|
| 140 | }
|
|---|
| 141 | } else if(Fill.tag == 'a') {
|
|---|
| 142 | memcpy( (char *)ptr + copy_end, Fill.fill.a, min(Dim * size - copy_end, size * Fill.nmemb) );
|
|---|
| 143 | }
|
|---|
| 144 |
|
|---|
| 145 | return ptr;
|
|---|
| 146 | } // alloc_internal$
|
|---|
| 147 | */
|
|---|
| 148 |
|
|---|
| 149 | typedef struct S_align { inline size_t; } T_align;
|
|---|
| 150 | typedef struct S_resize { inline void *; } T_resize;
|
|---|
| 151 |
|
|---|
| 152 | forall( T & ) {
|
|---|
| 153 | struct S_fill { char tag; char c; size_t size; T * at; char t[50]; };
|
|---|
| 154 | struct S_realloc { inline T *; };
|
|---|
| 155 | }
|
|---|
| 156 |
|
|---|
| 157 | static inline T_align ?`align ( size_t a ) { return (T_align){a}; }
|
|---|
| 158 | static inline T_resize ?`resize ( void * a ) { return (T_resize){a}; }
|
|---|
| 159 |
|
|---|
| 160 | static inline forall( T & | sized(T) ) {
|
|---|
| 161 | S_fill(T) ?`fill ( T t ) {
|
|---|
| 162 | S_fill(T) ret = { 't' };
|
|---|
| 163 | size_t size = sizeof(T);
|
|---|
| 164 | if ( size > sizeof(ret.t) ) {
|
|---|
| 165 | abort( "ERROR: const object of size greater than 50 bytes given for dynamic memory fill\n" );
|
|---|
| 166 | } // if
|
|---|
| 167 | memcpy( &ret.t, &t, size );
|
|---|
| 168 | return ret;
|
|---|
| 169 | }
|
|---|
| 170 | S_fill(T) ?`fill ( zero_t ) = void; // FIX ME: remove this once ticket 214 is resolved
|
|---|
| 171 | S_fill(T) ?`fill ( T * a ) { return (S_fill(T)){ 'T', '0', 0, a }; } // FIX ME: remove this once ticket 214 is resolved
|
|---|
| 172 | S_fill(T) ?`fill ( char c ) { return (S_fill(T)){ 'c', c }; }
|
|---|
| 173 | S_fill(T) ?`fill ( T a[], size_t nmemb ) { return (S_fill(T)){ 'a', '0', nmemb * sizeof(T), a }; }
|
|---|
| 174 |
|
|---|
| 175 | S_realloc(T) ?`realloc ( T * a ) { return (S_realloc(T)){a}; }
|
|---|
| 176 |
|
|---|
| 177 | T * alloc_internal$( void * Resize, T * Realloc, size_t Align, size_t Dim, S_fill(T) Fill ) {
|
|---|
| 178 | T * ptr = NULL;
|
|---|
| 179 | size_t size = sizeof(T);
|
|---|
| 180 | size_t copy_end = 0;
|
|---|
| 181 |
|
|---|
| 182 | if ( Resize ) {
|
|---|
| 183 | ptr = (T*) (void *) resize( (void *)Resize, Align, Dim * size );
|
|---|
| 184 | } else if ( Realloc ) {
|
|---|
| 185 | if ( Fill.tag != '0' ) copy_end = min(malloc_size( Realloc ), Dim * size );
|
|---|
| 186 | ptr = (T *) (void *) realloc( (void *)Realloc, Align, Dim * size );
|
|---|
| 187 | } else {
|
|---|
| 188 | ptr = (T *) (void *) memalign( Align, Dim * size );
|
|---|
| 189 | }
|
|---|
| 190 |
|
|---|
| 191 | if ( Fill.tag == 'c' ) {
|
|---|
| 192 | memset( (char *)ptr + copy_end, (int)Fill.c, Dim * size - copy_end );
|
|---|
| 193 | } else if ( Fill.tag == 't' ) {
|
|---|
| 194 | for ( i; copy_end ~ Dim * size ~ size ) {
|
|---|
| 195 | #pragma GCC diagnostic push
|
|---|
| 196 | #pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
|
|---|
| 197 | assert( size <= sizeof(Fill.t) );
|
|---|
| 198 | memcpy( (char *)ptr + i, &Fill.t, size );
|
|---|
| 199 | #pragma GCC diagnostic pop
|
|---|
| 200 | }
|
|---|
| 201 | } else if ( Fill.tag == 'a' ) {
|
|---|
| 202 | memcpy( (char *)ptr + copy_end, Fill.at, min(Dim * size - copy_end, Fill.size) );
|
|---|
| 203 | } else if ( Fill.tag == 'T' ) {
|
|---|
| 204 | memcpy( (char *)ptr + copy_end, Fill.at, Dim * size );
|
|---|
| 205 | }
|
|---|
| 206 |
|
|---|
| 207 | return ptr;
|
|---|
| 208 | } // alloc_internal$
|
|---|
| 209 |
|
|---|
| 210 | forall( TT... | { T * alloc_internal$( void *, T *, size_t, size_t, S_fill(T), TT ); } ) {
|
|---|
| 211 | T * alloc_internal$( void *, T *, size_t Align, size_t Dim, S_fill(T) Fill, T_resize Resize, TT rest ) {
|
|---|
| 212 | return alloc_internal$( Resize, (T*)0p, Align, Dim, Fill, rest);
|
|---|
| 213 | }
|
|---|
| 214 |
|
|---|
| 215 | T * alloc_internal$( void *, T *, size_t Align, size_t Dim, S_fill(T) Fill, S_realloc(T) Realloc, TT rest ) {
|
|---|
| 216 | return alloc_internal$( (void*)0p, Realloc, Align, Dim, Fill, rest);
|
|---|
| 217 | }
|
|---|
| 218 |
|
|---|
| 219 | T * alloc_internal$( void * Resize, T * Realloc, size_t, size_t Dim, S_fill(T) Fill, T_align Align, TT rest ) {
|
|---|
| 220 | return alloc_internal$( Resize, Realloc, Align, Dim, Fill, rest);
|
|---|
| 221 | }
|
|---|
| 222 |
|
|---|
| 223 | T * alloc_internal$( void * Resize, T * Realloc, size_t Align, size_t Dim, S_fill(T), S_fill(T) Fill, TT rest ) {
|
|---|
| 224 | return alloc_internal$( Resize, Realloc, Align, Dim, Fill, rest );
|
|---|
| 225 | }
|
|---|
| 226 |
|
|---|
| 227 | T * alloc( TT all ) {
|
|---|
| 228 | return alloc_internal$( (void*)0p, (T*)0p, (_Alignof(T) > libAlign() ? _Alignof(T) : libAlign()), (size_t)1, (S_fill(T)){'0'}, all );
|
|---|
| 229 | }
|
|---|
| 230 |
|
|---|
| 231 | T * alloc( size_t dim, TT all ) {
|
|---|
| 232 | return alloc_internal$( (void*)0p, (T*)0p, (_Alignof(T) > libAlign() ? _Alignof(T) : libAlign()), dim, (S_fill(T)){'0'}, all );
|
|---|
| 233 | }
|
|---|
| 234 | } // distribution TT
|
|---|
| 235 | } // distribution T
|
|---|
| 236 |
|
|---|
| 237 | static inline forall( T & | sized(T) ) {
|
|---|
| 238 | // CFA safe initialization/copy, i.e., implicit size specification, non-array types
|
|---|
| 239 | T * memset( T * dest, char fill ) {
|
|---|
| 240 | return (T *)memset( dest, fill, sizeof(T) );
|
|---|
| 241 | } // memset
|
|---|
| 242 |
|
|---|
| 243 | T * memcpy( T * dest, const T * src ) {
|
|---|
| 244 | return (T *)memcpy( dest, src, sizeof(T) );
|
|---|
| 245 | } // memcpy
|
|---|
| 246 |
|
|---|
| 247 | // CFA safe initialization/copy, i.e., implicit size specification, array types
|
|---|
| 248 | T * amemset( T dest[], char fill, size_t dim ) {
|
|---|
| 249 | return (T *)(void *)memset( dest, fill, dim * sizeof(T) ); // C memset
|
|---|
| 250 | } // amemset
|
|---|
| 251 |
|
|---|
| 252 | T * amemcpy( T dest[], const T src[], size_t dim ) {
|
|---|
| 253 | return (T *)(void *)memcpy( dest, src, dim * sizeof(T) ); // C memcpy
|
|---|
| 254 | } // amemcpy
|
|---|
| 255 | } // distribution
|
|---|
| 256 |
|
|---|
| 257 | // CFA deallocation for multiple objects
|
|---|
| 258 | static inline forall( T & ) // FIX ME, problems with 0p in list
|
|---|
| 259 | void free( T * ptr ) {
|
|---|
| 260 | free( (void *)ptr ); // C free
|
|---|
| 261 | } // free
|
|---|
| 262 | static inline forall( T &, TT... | { void free( TT ); } )
|
|---|
| 263 | void free( T * ptr, TT rest ) {
|
|---|
| 264 | free( ptr );
|
|---|
| 265 | free( rest );
|
|---|
| 266 | } // free
|
|---|
| 267 |
|
|---|
| 268 | // CFA allocation/deallocation and constructor/destructor, non-array types
|
|---|
| 269 | static inline forall( T & | sized(T), TT... | { void ?{}( T &, TT ); } )
|
|---|
| 270 | T * new( TT p ) {
|
|---|
| 271 | return &(*(T *)malloc()){ p }; // run constructor
|
|---|
| 272 | } // new
|
|---|
| 273 |
|
|---|
| 274 | static inline forall( T & | { void ^?{}( T & ); } )
|
|---|
| 275 | void delete( T * ptr ) {
|
|---|
| 276 | // special case for 0-sized object => always call destructor
|
|---|
| 277 | if ( ptr || sizeof(ptr) == 0 ) { // ignore null but not 0-sized objects
|
|---|
| 278 | ^(*ptr){}; // run destructor
|
|---|
| 279 | } // if
|
|---|
| 280 | free( ptr ); // always call free
|
|---|
| 281 | } // delete
|
|---|
| 282 | static inline forall( T &, TT... | { void ^?{}( T & ); void delete( TT ); } )
|
|---|
| 283 | void delete( T * ptr, TT rest ) {
|
|---|
| 284 | delete( ptr );
|
|---|
| 285 | delete( rest );
|
|---|
| 286 | } // delete
|
|---|
| 287 |
|
|---|
| 288 | // CFA allocation/deallocation and constructor/destructor, array types
|
|---|
| 289 | forall( T & | sized(T), TT... | { void ?{}( T &, TT ); } ) T * anew( size_t dim, TT p );
|
|---|
| 290 | forall( T & | sized(T) | { void ^?{}( T & ); } ) void adelete( T arr[] );
|
|---|
| 291 | forall( T & | sized(T) | { void ^?{}( T & ); }, TT... | { void adelete( TT ); } ) void adelete( T arr[], TT rest );
|
|---|
| 292 |
|
|---|
| 293 | //---------------------------------------
|
|---|
| 294 |
|
|---|
| 295 | static inline {
|
|---|
| 296 | int strto( const char sptr[], char ** eptr, int base ) { return (int)strtol( sptr, eptr, base ); }
|
|---|
| 297 | unsigned int strto( const char sptr[], char ** eptr, int base ) { return (unsigned int)strtoul( sptr, eptr, base ); }
|
|---|
| 298 | long int strto( const char sptr[], char ** eptr, int base ) { return strtol( sptr, eptr, base ); }
|
|---|
| 299 | unsigned long int strto( const char sptr[], char ** eptr, int base ) { return strtoul( sptr, eptr, base ); }
|
|---|
| 300 | long long int strto( const char sptr[], char ** eptr, int base ) { return strtoll( sptr, eptr, base ); }
|
|---|
| 301 | unsigned long long int strto( const char sptr[], char ** eptr, int base ) { return strtoull( sptr, eptr, base ); }
|
|---|
| 302 |
|
|---|
| 303 | float strto( const char sptr[], char ** eptr ) { return strtof( sptr, eptr ); }
|
|---|
| 304 | double strto( const char sptr[], char ** eptr ) { return strtod( sptr, eptr ); }
|
|---|
| 305 | long double strto( const char sptr[], char ** eptr ) { return strtold( sptr, eptr ); }
|
|---|
| 306 | } // distribution
|
|---|
| 307 |
|
|---|
| 308 | float _Complex strto( const char sptr[], char ** eptr );
|
|---|
| 309 | double _Complex strto( const char sptr[], char ** eptr );
|
|---|
| 310 | long double _Complex strto( const char sptr[], char ** eptr );
|
|---|
| 311 |
|
|---|
| 312 | static inline {
|
|---|
| 313 | int ato( const char sptr[] ) { return (int)strtol( sptr, 0p, 10 ); }
|
|---|
| 314 | unsigned int ato( const char sptr[] ) { return (unsigned int)strtoul( sptr, 0p, 10 ); }
|
|---|
| 315 | long int ato( const char sptr[] ) { return strtol( sptr, 0p, 10 ); }
|
|---|
| 316 | unsigned long int ato( const char sptr[] ) { return strtoul( sptr, 0p, 10 ); }
|
|---|
| 317 | long long int ato( const char sptr[] ) { return strtoll( sptr, 0p, 10 ); }
|
|---|
| 318 | unsigned long long int ato( const char sptr[] ) { return strtoull( sptr, 0p, 10 ); }
|
|---|
| 319 |
|
|---|
| 320 | float ato( const char sptr[] ) { return strtof( sptr, 0p ); }
|
|---|
| 321 | double ato( const char sptr[] ) { return strtod( sptr, 0p ); }
|
|---|
| 322 | long double ato( const char sptr[] ) { return strtold( sptr, 0p ); }
|
|---|
| 323 |
|
|---|
| 324 | float _Complex ato( const char sptr[] ) { return strto( sptr, 0p ); }
|
|---|
| 325 | double _Complex ato( const char sptr[] ) { return strto( sptr, 0p ); }
|
|---|
| 326 | long double _Complex ato( const char sptr[] ) { return strto( sptr, 0p ); }
|
|---|
| 327 | } // distribution
|
|---|
| 328 |
|
|---|
| 329 | //---------------------------------------
|
|---|
| 330 |
|
|---|
| 331 | forall( E | { int ?<?( E, E ); } ) {
|
|---|
| 332 | E * bsearch( E key, const E * vals, size_t dim );
|
|---|
| 333 | size_t bsearch( E key, const E * vals, size_t dim );
|
|---|
| 334 | E * bsearchl( E key, const E * vals, size_t dim );
|
|---|
| 335 | size_t bsearchl( E key, const E * vals, size_t dim );
|
|---|
| 336 | E * bsearchu( E key, const E * vals, size_t dim );
|
|---|
| 337 | size_t bsearchu( E key, const E * vals, size_t dim );
|
|---|
| 338 | } // distribution
|
|---|
| 339 |
|
|---|
| 340 | forall( K, E | { int ?<?( K, K ); K getKey( const E & ); } ) {
|
|---|
| 341 | E * bsearch( K key, const E * vals, size_t dim );
|
|---|
| 342 | size_t bsearch( K key, const E * vals, size_t dim );
|
|---|
| 343 | E * bsearchl( K key, const E * vals, size_t dim );
|
|---|
| 344 | size_t bsearchl( K key, const E * vals, size_t dim );
|
|---|
| 345 | E * bsearchu( K key, const E * vals, size_t dim );
|
|---|
| 346 | size_t bsearchu( K key, const E * vals, size_t dim );
|
|---|
| 347 | } // distribution
|
|---|
| 348 |
|
|---|
| 349 | forall( E | { int ?<?( E, E ); } ) {
|
|---|
| 350 | void qsort( E * vals, size_t dim );
|
|---|
| 351 | } // distribution
|
|---|
| 352 |
|
|---|
| 353 | //---------------------------------------
|
|---|
| 354 |
|
|---|
| 355 | extern "C" { // override C version
|
|---|
| 356 | void srandom( unsigned int seed );
|
|---|
| 357 | long int random( void ); // GENERATES POSITIVE AND NEGATIVE VALUES
|
|---|
| 358 | // For positive values, use unsigned int, e.g., unsigned int r = random() % 100U;
|
|---|
| 359 | } // extern "C"
|
|---|
| 360 |
|
|---|
| 361 | static inline {
|
|---|
| 362 | long int random( long int l, long int u ) { if ( u < l ) [u, l] = [l, u]; return lrand48() % (u - l + 1) + l; } // [l,u]
|
|---|
| 363 | long int random( long int u ) { return random( 0, u - 1 ); } // [0,u)
|
|---|
| 364 | unsigned long int random( void ) { return lrand48(); }
|
|---|
| 365 | unsigned long int random( unsigned long int u ) { return lrand48() % u; } // [0,u)
|
|---|
| 366 | unsigned long int random( unsigned long int l, unsigned long int u ) { if ( u < l ) [u, l] = [l, u]; return lrand48() % (u - l + 1) + l; } // [l,u]
|
|---|
| 367 |
|
|---|
| 368 | char random( void ) { return (unsigned long int)random(); }
|
|---|
| 369 | char random( char u ) { return random( (unsigned long int)u ); } // [0,u)
|
|---|
| 370 | char random( char l, char u ) { return random( (unsigned long int)l, (unsigned long int)u ); } // [l,u)
|
|---|
| 371 | int random( void ) { return (long int)random(); }
|
|---|
| 372 | int random( int u ) { return random( (long int)u ); } // [0,u]
|
|---|
| 373 | int random( int l, int u ) { return random( (long int)l, (long int)u ); } // [l,u)
|
|---|
| 374 | unsigned int random( void ) { return (unsigned long int)random(); }
|
|---|
| 375 | unsigned int random( unsigned int u ) { return random( (unsigned long int)u ); } // [0,u]
|
|---|
| 376 | unsigned int random( unsigned int l, unsigned int u ) { return random( (unsigned long int)l, (unsigned long int)u ); } // [l,u)
|
|---|
| 377 | } // distribution
|
|---|
| 378 |
|
|---|
| 379 | float random( void ); // [0.0, 1.0)
|
|---|
| 380 | double random( void ); // [0.0, 1.0)
|
|---|
| 381 | float _Complex random( void ); // [0.0, 1.0)+[0.0, 1.0)i
|
|---|
| 382 | double _Complex random( void ); // [0.0, 1.0)+[0.0, 1.0)i
|
|---|
| 383 | long double _Complex random( void ); // [0.0, 1.0)+[0.0, 1.0)i
|
|---|
| 384 |
|
|---|
| 385 | //---------------------------------------
|
|---|
| 386 |
|
|---|
| 387 | // Sequential Pseudo Random-Number Generator : generate repeatable sequence of values that appear random.
|
|---|
| 388 | //
|
|---|
| 389 | // Declaration :
|
|---|
| 390 | // PRNG sprng = { 1009 } - set starting seed versus random seed
|
|---|
| 391 | //
|
|---|
| 392 | // Interface :
|
|---|
| 393 | // set_seed( sprng, 1009 ) - set starting seed for ALL kernel threads versus random seed
|
|---|
| 394 | // get_seed( sprng ) - read seed
|
|---|
| 395 | // prng( sprng ) - generate random value in range [0,UINT_MAX]
|
|---|
| 396 | // prng( sprng, u ) - generate random value in range [0,u)
|
|---|
| 397 | // prng( sprng, l, u ) - generate random value in range [l,u]
|
|---|
| 398 | // calls( sprng ) - number of generated random value so far
|
|---|
| 399 | //
|
|---|
| 400 | // Examples : generate random number between 5-21
|
|---|
| 401 | // prng( sprng ) % 17 + 5; values 0-16 + 5 = 5-21
|
|---|
| 402 | // prng( sprng, 16 + 1 ) + 5;
|
|---|
| 403 | // prng( sprng, 5, 21 );
|
|---|
| 404 | // calls( sprng );
|
|---|
| 405 |
|
|---|
| 406 | struct PRNG {
|
|---|
| 407 | uint32_t callcnt; // call count
|
|---|
| 408 | uint32_t seed; // current seed
|
|---|
| 409 | uint32_t state; // random state
|
|---|
| 410 | }; // PRNG
|
|---|
| 411 |
|
|---|
| 412 | void set_seed( PRNG & prng, uint32_t seed_ );
|
|---|
| 413 | static inline {
|
|---|
| 414 | void ?{}( PRNG & prng ) with( prng ) { callcnt = 0; set_seed( prng, rdtscl() ); } // random seed
|
|---|
| 415 | void ?{}( PRNG & prng, uint32_t seed ) with( prng ) { callcnt = 0; set_seed( prng, seed ); } // fixed seed
|
|---|
| 416 | uint32_t get_seed( PRNG & prng ) __attribute__(( warn_unused_result )) with( prng ) { return seed; } // get seed
|
|---|
| 417 | uint32_t prng( PRNG & prng ) __attribute__(( warn_unused_result )) with( prng ) { callcnt += 1; return LCG( state ); } // [0,UINT_MAX]
|
|---|
| 418 | uint32_t prng( PRNG & prng, uint32_t u ) __attribute__(( warn_unused_result )) { return prng( prng ) % u; } // [0,u)
|
|---|
| 419 | uint32_t prng( PRNG & prng, uint32_t l, uint32_t u ) __attribute__(( warn_unused_result )) { return prng( prng, u - l + 1 ) + l; } // [l,u]
|
|---|
| 420 | uint32_t calls( PRNG & prng ) __attribute__(( warn_unused_result )) with( prng ) { return callcnt; }
|
|---|
| 421 | } // distribution
|
|---|
| 422 |
|
|---|
| 423 | // Concurrent Pseudo Random-Number Generator : generate repeatable sequence of values that appear random.
|
|---|
| 424 | //
|
|---|
| 425 | // Interface :
|
|---|
| 426 | // set_seed( 1009 ) - fixed seed for all kernel threads versus random seed
|
|---|
| 427 | // get_seed() - read seed
|
|---|
| 428 | // prng() - generate random value in range [0,UINT_MAX]
|
|---|
| 429 | // prng( u ) - generate random value in range [0,u)
|
|---|
| 430 | // prng( l, u ) - generate random value in range [l,u]
|
|---|
| 431 | //
|
|---|
| 432 | // Examples : generate random number between 5-21
|
|---|
| 433 | // prng() % 17 + 5; values 0-16 + 5 = 5-21
|
|---|
| 434 | // prng( 16 + 1 ) + 5;
|
|---|
| 435 | // prng( 5, 21 );
|
|---|
| 436 |
|
|---|
| 437 | void set_seed( uint32_t seed_ ) OPTIONAL_THREAD;
|
|---|
| 438 | uint32_t get_seed() __attribute__(( warn_unused_result ));
|
|---|
| 439 | uint32_t prng( void ) __attribute__(( warn_unused_result )) OPTIONAL_THREAD; // [0,UINT_MAX]
|
|---|
| 440 | static inline {
|
|---|
| 441 | uint32_t prng( uint32_t u ) __attribute__(( warn_unused_result )) { return prng() % u; } // [0,u)
|
|---|
| 442 | uint32_t prng( uint32_t l, uint32_t u ) __attribute__(( warn_unused_result )) { return prng( u - l + 1 ) + l; } // [l,u]
|
|---|
| 443 | } // distribution
|
|---|
| 444 |
|
|---|
| 445 | //---------------------------------------
|
|---|
| 446 |
|
|---|
| 447 | extern bool threading_enabled( void ) OPTIONAL_THREAD;
|
|---|
| 448 |
|
|---|
| 449 | // Local Variables: //
|
|---|
| 450 | // mode: c //
|
|---|
| 451 | // tab-width: 4 //
|
|---|
| 452 | // End: //
|
|---|
