Richard Guenther wrote: >> I'm having a look to libstdc++/30482, which basically is C++ issue: Jakub >> basically raises the issue of whether we want to use by default the >> C99-conforming division in C++ too. Personally, I would be in favor of >> enabling it unconditionally, modulo maybe a performance check (Richard...). >> Otherwise, we should at least enable it for C++0x, which refers to C99 as C >> language, of course. >> >> What do people think? > > Well, I agree to enable this by default.
I'd prefer not to introduce a situation in which compiling the same code with "gcc" and with "g++" behaves differently and which performs worse in one case than the other. Users expect the C subset of C++ to perform like C. If we want the C99 rules, let's just turn them on everywhere, and then let users who want "quick and dirty" complex arithmetic to use the flag that turns that on. And, turn that on by default for -ffast-math? -- Mark Mitchell CodeSourcery [EMAIL PROTECTED] (650) 331-3385 x713
