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Message-ID: <20250818183417.GZ1827@brightrain.aerifal.cx>
Date: Mon, 18 Aug 2025 14:34:18 -0400
From: Rich Felker <dalias@...c.org>
To: Damian McGuckin <damianm@....com.au>
Cc: MUSL <musl@...ts.openwall.com>
Subject: Re: Should asinf(x) raise underflow for subnormal 'x'
On Mon, Aug 18, 2025 at 04:43:46PM +1000, Damian McGuckin wrote:
>
> The routine correctly returns 'x' for subnormal 'x'.
>
> For comparison, atan(x) for subnormal x returns 'x' and raises underflow.
>
> Should not asinf(x) also do the same?
>
> Also, should not both of these raise inexact when the result is small but
> still normal, i.e. the return value is just 'x'.
This all sounds right and like it's an oversight.
Rich
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