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Annotation of embedaddon/php/ext/standard/php_rand.h, revision 1.1

1.1     ! misho       1: /*
        !             2:    +----------------------------------------------------------------------+
        !             3:    | PHP Version 5                                                        |
        !             4:    +----------------------------------------------------------------------+
        !             5:    | Copyright (c) 1997-2012 The PHP Group                                |
        !             6:    +----------------------------------------------------------------------+
        !             7:    | This source file is subject to version 3.01 of the PHP license,      |
        !             8:    | that is bundled with this package in the file LICENSE, and is        |
        !             9:    | available through the world-wide-web at the following url:           |
        !            10:    | http://www.php.net/license/3_01.txt                                  |
        !            11:    | If you did not receive a copy of the PHP license and are unable to   |
        !            12:    | obtain it through the world-wide-web, please send a note to          |
        !            13:    | license@php.net so we can mail you a copy immediately.               |
        !            14:    +----------------------------------------------------------------------+
        !            15:    | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
        !            16:    |          Zeev Suraski <zeev@zend.com>                                |
        !            17:    |          Pedro Melo <melo@ip.pt>                                     |
        !            18:    |          Sterling Hughes <sterling@php.net>                          |
        !            19:    |                                                                      |
        !            20:    | Based on code from: Shawn Cokus <Cokus@math.washington.edu>          |
        !            21:    +----------------------------------------------------------------------+
        !            22:  */
        !            23: /* $Id: php_rand.h 321634 2012-01-01 13:15:04Z felipe $ */
        !            24: 
        !            25: #ifndef PHP_RAND_H
        !            26: #define        PHP_RAND_H
        !            27: 
        !            28: #include <stdlib.h>
        !            29: #include "basic_functions.h"
        !            30: 
        !            31: /* System Rand functions */
        !            32: #ifndef RAND_MAX
        !            33: #define RAND_MAX (1<<15)
        !            34: #endif
        !            35: 
        !            36: /* In ZTS mode we rely on rand_r() so we must use RAND_MAX. */
        !            37: #if !defined(ZTS) && (defined(HAVE_LRAND48) || defined(HAVE_RANDOM))
        !            38: #define PHP_RAND_MAX 2147483647
        !            39: #else
        !            40: #define PHP_RAND_MAX RAND_MAX
        !            41: #endif
        !            42: 
        !            43: #define RAND_RANGE(__n, __min, __max, __tmax) \
        !            44:     (__n) = (__min) + (long) ((double) ( (double) (__max) - (__min) + 1.0) * ((__n) / ((__tmax) + 1.0)))
        !            45: 
        !            46: /* MT Rand */
        !            47: #define PHP_MT_RAND_MAX ((long) (0x7FFFFFFF)) /* (1<<31) - 1 */ 
        !            48: 
        !            49: #ifdef PHP_WIN32
        !            50: #define GENERATE_SEED() (((long) (time(0) * GetCurrentProcessId())) ^ ((long) (1000000.0 * php_combined_lcg(TSRMLS_C))))
        !            51: #else
        !            52: #define GENERATE_SEED() (((long) (time(0) * getpid())) ^ ((long) (1000000.0 * php_combined_lcg(TSRMLS_C))))
        !            53: #endif
        !            54: 
        !            55: PHPAPI void php_srand(long seed TSRMLS_DC);
        !            56: PHPAPI long php_rand(TSRMLS_D);
        !            57: PHPAPI void php_mt_srand(php_uint32 seed TSRMLS_DC);
        !            58: PHPAPI php_uint32 php_mt_rand(TSRMLS_D);
        !            59: 
        !            60: #endif /* PHP_RAND_H */