Martin Storsjo : msvcrt: Make the cosh function NAN preserving.
Alexandre Julliard
julliard at winehq.org
Wed Jul 28 15:37:42 CDT 2021
Module: wine
Branch: master
Commit: 60d178b410ba943c6c39b2ccf1deaec264d7d21a
URL: https://source.winehq.org/git/wine.git/?a=commit;h=60d178b410ba943c6c39b2ccf1deaec264d7d21a
Author: Martin Storsjo <martin at martin.st>
Date: Wed Jul 28 14:42:09 2021 +0200
msvcrt: Make the cosh function NAN preserving.
Signed-off-by: Martin Storsjo <martin at martin.st>
Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/msvcrt/math.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index a902d4f04b9..2bd4206359b 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -2776,6 +2776,7 @@ static double __expo2(double x, double sign)
double CDECL cosh( double x )
{
UINT64 ux = *(UINT64*)&x;
+ UINT64 sign = ux & 0x8000000000000000ULL;
UINT32 w;
double t;
@@ -2803,7 +2804,10 @@ double CDECL cosh( double x )
/* |x| > log(DBL_MAX) or nan */
/* note: the result is stored to handle overflow */
- t = __expo2(x, 1.0);
+ if (ux > 0x7ff0000000000000ULL)
+ *(UINT64*)&t = ux | sign | 0x0008000000000000ULL;
+ else
+ t = __expo2(x, 1.0);
return t;
}
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