From: Markus Wichmann <email@example.com>
Subject: Re: [musl] ASM-to-C conversion for i386
Date: Sun, 26 Dec 2021 22:20:17 +0100 [thread overview]
Message-ID: <20211226212017.GB1949@voyager> (raw)
On Sun, Dec 26, 2021 at 09:42:38PM +0100, Markus Wichmann wrote:
> Many of the maths functions are testing if their argument is subnormal,
> and return an underflow exception if so and the argument is not zero.
> For the single-precision case, the idiom used was to square the input,
> which I have recreated with FORCE_EVAL(). For the double-precision case,
> however, it was to store the variable as single precision.
Dang it, I forgot to ask the point this was leading towards: Is there
already an idiom in use in the maths code elsewhere to force an
underflow exception for subnormal nonzero inputs?
next prev parent reply other threads:[~2021-12-26 21:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-26 20:42 Markus Wichmann
2021-12-26 21:20 ` Markus Wichmann [this message]
2021-12-27 13:08 ` Markus Wichmann
2021-12-27 15:00 ` Rich Felker
2021-12-27 16:27 ` Markus Wichmann
2021-12-27 16:30 ` Rich Felker
2021-12-27 18:04 ` Markus Wichmann
2021-12-27 18:41 ` Rich Felker
2021-12-28 8:42 ` Markus Wichmann
2021-12-29 10:02 ` Markus Wichmann
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