http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57073
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-26
07:06:53 UTC ---
Modulo is an integer only operation, so I'd say you want
(k & 1) ? -1.0 : 1.0
instead, converting (k & 1) into floating point and multiplying and subtracting
it or (k & 1) << 1 into floating point and subtracting it is is likely going to
be more expensive, though of course it should be benchmarked.
