Date: Sat, 19 Sep 2020 17:09:58 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org Subject: Re: [PATCH] libm -- fix expl kernels Message-ID: <20200920000958.GA47838@troutmask.apl.washington.edu> In-Reply-To: <20200919235849.GA47701@troutmask.apl.washington.edu> References: <20200919235849.GA47701@troutmask.apl.washington.edu>
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On Sat, Sep 19, 2020 at 04:58:49PM -0700, Steve Kargl wrote:
> The following patch fixes the ld80 and ld128 kernels for expl(x).
Subj: is slightly wrong. This fixes the cexpl(z) kernels.
> I can't test ld128, so that patch is untested.
>
> . Micro-optimization: use sincosl(x) instead of a call to cosl(x) and
> a call to sinl(x). Argument reduction is done once not twice.
This part also fixes a cos(x) that should be cosl(x).
> . Use a long double constant instead of an invalid double constant.
> . Spell scale2 correctly
--
Steve
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