PATCH: optimized expf for x86_32

Ulrich Drepper drepper@gmail.com
Mon Apr 2 21:34:00 GMT 2012


On Mon, Apr 2, 2012 at 07:34, Dmitrieva Liubov
<liubov.dmitrieva@gmail.com> wrote:
>                                Istanbul, Atom, Nehalem, AVX
> Current __expf_finite:                  79.20   326.29  98.05   99.05
> Current __ieee754_expf: 70.69   293.30  91.38   94.76
>
> New __expf_finite:                      64.29   145.14  42.31   35.95
> New __ieee754_expf:             51.83   113.14  34.12   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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