Re: HEADSUP: math is broken with clang and optimization

From: Steve Kargl <sgk_at_troutmask.apl.washington.edu>
Date: Mon, 15 Feb 2021 13:03:36 -0800
On Mon, Feb 15, 2021 at 12:49:13PM -0800, Steve Kargl wrote:
> On Sun, Feb 14, 2021 at 01:59:58PM -0800, Steve Kargl wrote:
> > Just a headsup for anyone doing numerical work with
> > FreeBSD-current.  clang with optimization of -O1 or
> > higher produces wrong results.  Testing 1 million 
> > complex values of ccoshf and limiting |z| < 20,
> > shows
> > 
> 
> This is either an in-ling bug or discarding a cast issue.
> With everything in the same file so clang has dp_ccosh
> available to it when compiling main.
> 

Code builds and works as expected with gcc 10.2and
gcc 11.0.0.

-- 
Steve
Received on Mon Feb 15 2021 - 20:03:37 UTC

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