Description: ------------ Normally, when there's a dot in one of bcpowmod's parameters, you get a "bc math warning: non-zerio scale in whatever". The PHP_Compat version, however, does not do this. Test script: --------------- <?php bcpowmod('2.0', '3.0', '4.0'); Expected result: ---------------- bc math warning: non-zero scale in base bc math warning: non-zero scale in exponent bc math warning: non-zero scale in modulus

http://ideone.com/33XxD On further inspection, I believe that the error is in the bc math library. I am unable to reproduce or test for this error using any of the other functions in the bc math library.

I checked the code, where the errors are produced: http://svn.php.net/viewvc/php/php-src/trunk/ext/bcmath/libbcmath/src/raisemod.c?view=markup I don't know how to calculate the n_scale value it is checking...