This improves accuracy (very slightly) and speed for processors having
fma3.
Sample benchmark (fate flac-16-lpc-cholesky, Haswell):
old:
5993610 decicycles in ff_lpc_calc_coefs, 64 runs, 0 skips
5951528 decicycles in ff_lpc_calc_coefs, 128 runs, 0 skips
new:
5252410 decicycles
On Thu, Jan 14, 2016 at 7:39 PM, Ganesh Ajjanagadde
wrote:
> This improves accuracy (very slightly) and speed for processors having
> fma3.
>
> Sample benchmark (fate flac-16-lpc-cholesky, Haswell):
> old:
> 5993610 decicycles in ff_lpc_calc_coefs, 64 runs, 0 skips
> 5951528 decicycles i
