On 2005-06-15 15:45:34 +0200, Gabriel Paubert wrote: > The exception flags are sticky. So you get the exception because > operations before feenableexcept set the overflow flag.
I know that the flags are sticky. But I thought the traps were linked to the FP operations only (not to the flags). > The difference is that the PPC triggers the exception as soon > as you unmask the exception while the x86 only checks for > pending exceptions at the beginning of an arithmetic FP instruction. OK, the PPC behavior seems to be more logical to me. [...] > On x86, SSE exception handling is much saner. and the rounding precision too. :) Thanks for the explanations. -- Vincent Lefèvre <[EMAIL PROTECTED]> - Web: <http://www.vinc17.org/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/> Work: CR INRIA - computer arithmetic / SPACES project at LORIA
