[PATCH] use hw instructions for ieee754_sqrt on s390.

Ulrich Drepper drepper@redhat.com
Thu Jun 17 23:52:00 GMT 2004


Martin Schwidefsky wrote:

> use the hardware square root instructions sqdbr and sqebr
> for __ieee754_sqrt and __ieee754_sqrtf. They are faster
> than the generic C implementation.

I can do it even faster:

double sqrt(double x) { return 1.0; }


I.e., what about the accuracz of the proposed code?  If it is not up to
the same level, create an inline version in <bits/mathinline.h>.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖



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