Re: bug on bc math?

Hi: I'd like mark this as a doc problem, see the comment of the bcmatch lib: /* The multiply routine. N2 times N1 is put int PROD with the scale of the result being MIN(N2 scale+N1 scale, MAX (SCALE, N2 scale, N1 scale)). */ void bc_multiply (bc_num n1, bc_num n2, bc_num *prod, int scale TSRMLS_DC) and * Here is the full add routine that takes care of negative numbers. N1 is added to N2 and the result placed into RESULT. SCALE_MIN is the minimum scale for the result. */ void bc_add (n1, n2, result, scale_min) thanks On Mon, Jul 30, 2012 at 8:47 PM, Devis Lucato <devis@lucato.it> wrote: > Hi, > > before raising a bug I was wondering if anyone noticed this odd behavior in > BC math functions ? > > Actual > > php -r "echo bcmul('1.1', '9.0', 5);" ==> 9.90 > php -r "bcscale(5); echo bcmul('1.1', '9.0');" ==> 9.90 > php -r "bcscale(5); echo bcadd('8.9', '1.0');" ==> 9.90000 > > > Expected > > php -r "echo bcmul('1.1', '9.0', 5);" ==> 9.90000 > php -r "bcscale(5); echo bcmul('1.1', '9.0');" ==> 9.90000 > php -r "bcscale(5); echo bcadd('8.9', '1.0');" ==> 9.90000 > > > Seen on 5.3 and 5.4. > > Looking at > > http://git.php.net/?p=php-src.git;a=history;f=ext/bcmath/bcmath.c;h=5dfafa8bd8dbc1703af2ea4452ac2b05b765a619;hb=HEADI > couldn't see any recent change related to this bug. > > Thank you -- Laruence Xinchen Hui http://www.laruence.com/