Doc #55446 [Opn->Csd]: getrandmax() incorrectly defined on rand() page

Edit report at https://bugs.php.net/bug.php?id=55446&edit=1 ID: 55446 Updated by: rquadling@php.net Reported by: danielklein at airpost dot net Summary: getrandmax() incorrectly defined on rand() page -Status: Open +Status: Closed Type: Documentation Problem Package: Website problem PHP Version: Irrelevant -Assigned To: +Assigned To: rquadling Block user comment: N Private report: N New Comment: This bug has been fixed in SVN. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. For Windows: http://windows.php.net/snapshots/ Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2011-08-18 12:56:53] rquadling@php.net Automatic comment from SVN on behalf of rquadling Revision: http://svn.php.net/viewvc/?view=revision&revision=315138 Log: getrandmax returns 2^15 - 1, not 2 ^ 15 on Windows (and maybe others). Fix bug #55446 ------------------------------------------------------------------------ [2011-08-18 04:44:58] danielklein at airpost dot net Description: ------------ getrandmax() returns 32767 on my Windows system, not 32768 as documented. This makes sense as 32767 is the highest unsigned 15 bit number. Also, setting min and max, while affecting the range, does not affect the granularity. The result of rand(0, 0x7FFF00) will always be a multiple of 256 (0x100). This should be noted as I was trying to use rand() to produce more than 32767 unique values. Please make a note in the rand() page that mt_rand() produces more unique values in this case. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=55446&edit=1