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msvcrt: Make the cosh function NAN preserving. 

Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Martin Storsjo 2021-07-28 14:42:09 +02:00 committed by Alexandre Julliard
parent e93e246719
commit 60d178b410
1 changed files with 5 additions and 1 deletions
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6
dlls/msvcrt/math.c
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@ -2776,6 +2776,7 @@ static double __expo2(double x, double sign)
double CDECL cosh( double x ) double CDECL cosh( double x )
{ {
UINT64 ux = *(UINT64*)&x; UINT64 ux = *(UINT64*)&x;
UINT64 sign = ux & 0x8000000000000000ULL;
UINT32 w; UINT32 w;
double t; double t;
@ -2803,7 +2804,10 @@ double CDECL cosh( double x )
/* |x| > log(DBL_MAX) or nan */ /* |x| > log(DBL_MAX) or nan */
/* note: the result is stored to handle overflow */ /* 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; return t;
} }