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| author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2013-03-14 05:42:27 +0000 |
|---|---|---|
| committer | <> | 2013-04-03 16:25:08 +0000 |
| commit | c4dd7a1a684490673e25aaf4fabec5df138854c4 (patch) | |
| tree | 4d57c44caae4480efff02b90b9be86f44bf25409 /ext/standard/php_rand.h | |
| download | php2-master.tar.gz | |
Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master
Diffstat (limited to 'ext/standard/php_rand.h')
| -rw-r--r-- | ext/standard/php_rand.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/ext/standard/php_rand.h b/ext/standard/php_rand.h new file mode 100644 index 0000000..e831f32 --- /dev/null +++ b/ext/standard/php_rand.h @@ -0,0 +1,60 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 5 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2013 The PHP Group | + +----------------------------------------------------------------------+ + | This source file is subject to version 3.01 of the PHP license, | + | that is bundled with this package in the file LICENSE, and is | + | available through the world-wide-web at the following url: | + | http://www.php.net/license/3_01.txt | + | If you did not receive a copy of the PHP license and are unable to | + | obtain it through the world-wide-web, please send a note to | + | license@php.net so we can mail you a copy immediately. | + +----------------------------------------------------------------------+ + | Authors: Rasmus Lerdorf <rasmus@php.net> | + | Zeev Suraski <zeev@zend.com> | + | Pedro Melo <melo@ip.pt> | + | Sterling Hughes <sterling@php.net> | + | | + | Based on code from: Shawn Cokus <Cokus@math.washington.edu> | + +----------------------------------------------------------------------+ + */ +/* $Id$ */ + +#ifndef PHP_RAND_H +#define PHP_RAND_H + +#include <stdlib.h> +#include "basic_functions.h" + +/* System Rand functions */ +#ifndef RAND_MAX +#define RAND_MAX (1<<15) +#endif + +/* In ZTS mode we rely on rand_r() so we must use RAND_MAX. */ +#if !defined(ZTS) && (defined(HAVE_LRAND48) || defined(HAVE_RANDOM)) +#define PHP_RAND_MAX 2147483647 +#else +#define PHP_RAND_MAX RAND_MAX +#endif + +#define RAND_RANGE(__n, __min, __max, __tmax) \ + (__n) = (__min) + (long) ((double) ( (double) (__max) - (__min) + 1.0) * ((__n) / ((__tmax) + 1.0))) + +/* MT Rand */ +#define PHP_MT_RAND_MAX ((long) (0x7FFFFFFF)) /* (1<<31) - 1 */ + +#ifdef PHP_WIN32 +#define GENERATE_SEED() (((long) (time(0) * GetCurrentProcessId())) ^ ((long) (1000000.0 * php_combined_lcg(TSRMLS_C)))) +#else +#define GENERATE_SEED() (((long) (time(0) * getpid())) ^ ((long) (1000000.0 * php_combined_lcg(TSRMLS_C)))) +#endif + +PHPAPI void php_srand(long seed TSRMLS_DC); +PHPAPI long php_rand(TSRMLS_D); +PHPAPI void php_mt_srand(php_uint32 seed TSRMLS_DC); +PHPAPI php_uint32 php_mt_rand(TSRMLS_D); + +#endif /* PHP_RAND_H */ |