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61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2004 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.0 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_0.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Rasmus Lerdorf <rasmus@php.net> |
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| Zeev Suraski <zeev@zend.com> |
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| Pedro Melo <melo@ip.pt> |
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| Sterling Hughes <sterling@php.net> |
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| |
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| Based on code from: Shawn Cokus <Cokus@math.washington.edu> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifndef PHP_RAND_H
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#define PHP_RAND_H
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#include <stdlib.h>
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#include "basic_functions.h"
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/* System Rand functions */
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#ifndef RAND_MAX
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#define RAND_MAX (1<<15)
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#endif
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/* In ZTS mode we rely on rand_r() so we must use RAND_MAX. */
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#if !defined(ZTS) && (defined(HAVE_LRAND48) || defined(HAVE_RANDOM))
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#define PHP_RAND_MAX 2147483647
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#else
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#define PHP_RAND_MAX RAND_MAX
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#endif
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#define RAND_RANGE(__n, __min, __max, __tmax) \
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(__n) = (__min) + (long) ((double) ( (double) (__max) - (__min) + 1.0) * ((__n) / ((__tmax) + 1.0)))
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/* MT Rand */
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#define PHP_MT_RAND_MAX ((long) (0x7FFFFFFF)) /* (1<<31) - 1 */
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#ifdef PHP_WIN32
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#define GENERATE_SEED() ((long) (time(0) * GetCurrentProcessId() * 1000000 * php_combined_lcg(TSRMLS_C)))
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#else
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#define GENERATE_SEED() ((long) (time(0) * getpid() * 1000000 * php_combined_lcg(TSRMLS_C)))
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#endif
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PHPAPI void php_srand(long seed TSRMLS_DC);
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PHPAPI long php_rand(TSRMLS_D);
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PHPAPI void php_mt_srand(php_uint32 seed TSRMLS_DC);
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PHPAPI php_uint32 php_mt_rand(TSRMLS_D);
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#endif /* PHP_RAND_H */
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