musl - issue with sinhf

Date: Fri, 05 Feb 2021 09:01:09 +0100
From: Paul Zimmermann <Paul.Zimmermann@...ia.fr>
To: musl@...ts.openwall.com
Subject: issue with sinhf

       Hi,

a similar issue happens with sinhf:

$ cat test_sinh_musl.c
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int
main ()
{
  float x = 0x1.62e4p+6;
  float y = sinhf (x);
  printf ("x=%a y=%a\n", x, y);
}

With GNU libc:
$ gcc -fno-builtin test_sinh_musl.c -lm
$ ./a.out
x=0x1.62e4p+6 y=0x1.ffe808p+126

With musl-1.2.2:
$ gcc -fno-builtin test_sinh_musl.c $FILES
$ ./a.out
x=0x1.62e4p+6 y=-nan

Here we get NaN whereas the result is perfectly valid.

Best regards,
Paul

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.