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Edit File: php_rand.h
/* +----------------------------------------------------------------------+ | PHP Version 5 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2015 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" #include "php_lcg.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 */