From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gabriel Dos Reis To: Olivier Galibert Cc: gcc@gcc.gnu.org Subject: Re: What is acceptable for -ffast-math? (Was: associative law in combine) Date: Tue, 31 Jul 2001 02:58:00 -0000 Message-id: References: <20010731053542.B7064@zalem.puupuu.org> X-SW-Source: 2001-07/msg02090.html Olivier Galibert writes: | There is a whole world of users there outside of numerical | computations as the physicist understand them. And for them speed is | important, and they know how to keep their values within the bounds | that the compiler and the processor handle efficiently. Don't go and | cripple _them_. I don't want to "cripple" them. And, I don't think "cripple" is a fair characterization. You seem to imply that for someone who does Image Analysis, correctness is less important than speed. I disagree, if that were indeed your intent. If you expect the compiler to evaluate a/b/c as a/(b*c) then you would have written a/(b*c). Wouldn't you? And speed does matter for numerical programmers also. -- Gaby