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Date: Sat, 06 Feb 2021 07:29:52 +0100
From: Paul Zimmermann <>
To: Szabolcs Nagy <>
Subject: Re: issue with sinhf

       Dear Szabolcs,

> this seems to be a bug, attaching a fix
> [2:text/x-diff Show Save:0001-math-fix-acoshf-for-negative-inputs.patch (2kB)]

I confirm this solves the acoshf issue:

GNU libc:
$ gcc -fno-builtin test_acosh_musl.c -lm
$ ./a.out
x=-0x1.1e6ae8p+5 y=-nan

musl-1.2.2 + above patch:
$ gcc -fno-builtin test_acosh_musl.c $FILES
$ ./a.out
x=-0x1.1e6ae8p+5 y=-nan

Thank you!

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