ID: 44995 Updated by: sjo...@php.net Reported By: nat at fishtrap dot co dot uk Status: Open Bug Type: BC math related Operating System: Linux PHP Version: 5.2CVS-2008-05-14 (snap) New Comment:
This seems to be a bug in the bc library. I asked jhasler to look into it. Previous Comments: ------------------------------------------------------------------------ [2008-05-14 16:26:56] nat at fishtrap dot co dot uk Description: ------------ When using the 4th optional parameter of bcpowmod. The answer is always zero and does not match the answer using bc directly. This is also true if you set the scale using bcscale(1). In short if the scale is non zero I can't find any way of getting anything apart from zero as the result. Reproduce code: --------------- echo bcpowmod("4", "4", "3", 1 ) ,PHP_EOL; Expected result: ---------------- 0.1 in bc scale =1; 4^4%3; .1 Actual result: -------------- 0.0 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=44995&edit=1