com php-src: Test that mt_rand() consistently produce s the wrong results: ext/standard/tests/math/mt_ran d_value.phpt

Commit: a50c31da1917bb07b3c11f229125ab8d1f0b9b70 Author: Andrea Faulds <ajf@ajf.me> Thu, 18 Feb 2016 22:35:44 +0000 Parents: 796e1629b088cb3580650bd653b0b06d627052d7 Branches: PHP-7.0 Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=a50c31da1917bb07b3c11f229125ab8d1f0b9b70 Log: Test that mt_rand() consistently produces the wrong results See 6f6bd8ce531636134efd5f669a4e8373fb2e9e51 and its revert, a0724d30817600540946b41e40f4cfc2a0c30f80. Changed paths: A ext/standard/tests/math/mt_rand_value.phpt Diff: diff --git a/ext/standard/tests/math/mt_rand_value.phpt b/ext/standard/tests/math/mt_rand_value.phpt new file mode 100644 index 0000000..772305a --- /dev/null +++ b/ext/standard/tests/math/mt_rand_value.phpt @@ -0,0 +1,44 @@ +--TEST-- +Test mt_rand() output +--FILE-- +<?php + +mt_srand(12345678); + +for ($i=0; $i<16; $i++) { + echo mt_rand().PHP_EOL; +} +echo PHP_EOL; + +$x = 0; +for ($i=0; $i<1024; $i++) { + $x ^= mt_rand(); +} +echo $x.PHP_EOL; + +/* + * Note that the output will be different from the original mt19937ar.c, + * because PHP's implementation contains a bug. Thus, this test actually + * checks to make sure that PHP's behaviour is wrong, but consistently so. + */ + +?> +--EXPECTF-- +1614640687 +1711027313 +857485497 +688176834 +1386682158 +412773096 +813703253 +898651287 +2087374214 +1382556330 +1640700129 +1863374167 +1324097651 +1923803667 +676334965 +853386222 + +1571178311