|author||Rich Felker <email@example.com>||2011-06-12 10:53:42 -0400|
|committer||Rich Felker <firstname.lastname@example.org>||2011-06-12 10:53:42 -0400|
malloc: cast size down to int in bin_index functions
even if size_t was 32-bit already, the fact that the value was unsigned and that gcc is too stupid to figure out it would be positive as a signed quantity (due to the immediately-prior arithmetic and conditionals) results in gcc compiling the integer-to-float conversion as zero extension to 64 bits followed by an "fildll" (64 bit) instruction rather than a simple "fildl" (32 bit) instruction on x86. reportedly fildll is very slow on certain p4-class machines; even if not, the new code is slightly smaller.
Diffstat (limited to 'src/fenv')
0 files changed, 0 insertions, 0 deletions