1 /* 2 +----------------------------------------------------------------------+ 3 | PHP Version 7 | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) 1997-2018 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: Richard J. Wagner <rjwagner@writeme.com> | 21 | Makoto Matsumoto <matumoto@math.keio.ac.jp> | 22 | Takuji Nishimura | 23 | Shawn Cokus <Cokus@math.washington.edu> | 24 +----------------------------------------------------------------------+ 25 */ 26 /* $Id$ */ 27 28 #include "php.h" 29 #include "php_rand.h" 30 #include "php_mt_rand.h" 31 32 /* {{{ php_srand 33 */ php_srand(zend_long seed)34PHPAPI void php_srand(zend_long seed) 35 { 36 php_mt_srand(seed); 37 } 38 /* }}} */ 39 40 /* {{{ php_rand 41 */ php_rand(void)42PHPAPI zend_long php_rand(void) 43 { 44 return php_mt_rand(); 45 } 46 /* }}} */ 47 48 /* {{{ proto int mt_rand([int min, int max]) 49 Returns a random number from Mersenne Twister */ PHP_FUNCTION(rand)50PHP_FUNCTION(rand) 51 { 52 zend_long min; 53 zend_long max; 54 int argc = ZEND_NUM_ARGS(); 55 56 if (argc == 0) { 57 RETURN_LONG(php_mt_rand() >> 1); 58 } 59 60 ZEND_PARSE_PARAMETERS_START(2, 2) 61 Z_PARAM_LONG(min) 62 Z_PARAM_LONG(max) 63 ZEND_PARSE_PARAMETERS_END(); 64 65 if (max < min) { 66 RETURN_LONG(php_mt_rand_common(max, min)); 67 } 68 69 RETURN_LONG(php_mt_rand_common(min, max)); 70 } 71 /* }}} */ 72 73 /* 74 * Local variables: 75 * tab-width: 4 76 * c-basic-offset: 4 77 * End: 78 * vim600: noet sw=4 ts=4 fdm=marker 79 * vim<600: noet sw=4 ts=4 80 */ 81