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Re: PATCH: optimized expf for x86_32


On Mon, Apr 2, 2012 at 07:34, Dmitrieva Liubov
<liubov.dmitrieva@gmail.com> wrote:
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ÂIstanbul, Atom, Nehalem, AVX
> Current __expf_finite: Â Â Â Â Â Â Â Â Â79.20 Â 326.29 Â98.05 Â 99.05
> Current __ieee754_expf: 70.69 Â 293.30 Â91.38 Â 94.76
>
> New __expf_finite: Â Â Â Â Â Â Â Â Â Â Â64.29 Â 145.14 Â42.31 Â 35.95
> New __ieee754_expf: Â Â Â Â Â Â 51.83 Â 113.14 Â34.12 Â 30.24

Why would the __expf_finite version be slower?  It should be a
cut-down version.  That's the whole purpose.

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