>>>>> "VL" == Vincent Lefevre <vincent+...@vinc17.org> writes:
VL> sinf being slower than sin is surprising Some weeks back I wrote a simple app to output a couple of waveforms as float samples (I encased it in a tiny script which piped the output to sox to create a wav). I found that converting it to work on and output doubles improved performance from around 2.2 sec per minute of output to around 0.3 sec per minute for a simple tan(sin(t)) waveform. That is using glibc-2.14.1 on amd64 on a 2800MHz K10, compiled with gcc-4.6.2 with -O2 and the graphite -floop-... options. Some improvements have landed for the float versions of libm since. -JimC -- James Cloos <cl...@jhcloos.com> OpenPGP: 1024D/ED7DAEA6
