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msvcrt: Make the tanhf function NAN preserving.

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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 14:42:03 +02:00 committed by Alexandre Julliard
parent 4fd9daea4a
commit e93e246719
1 changed files with 6 additions and 3 deletions
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9
dlls/msvcrt/math.c
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@ -1881,21 +1881,24 @@ float CDECL tanf( float x )
float CDECL tanhf( float x )
{
UINT32 ui = *(UINT32*)&x;
int sign;
UINT32 sign = ui & 0x80000000;
float t;
/* x = |x| */
sign = ui >> 31;
ui &= 0x7fffffff;
x = *(float*)&ui;
if (ui > 0x3f0c9f54) {
/* |x| > log(3)/2 ~= 0.5493 or nan */
if (ui > 0x41200000) {
if (ui > 0x7f800000) {
*(UINT32*)&x = ui | sign | 0x400000;
#if _MSVCR_VER < 140
if (isnan(x))
return math_error(_DOMAIN, "tanhf", x, 0, x);
#else
return x;
#endif
}
/* |x| > 10 */
fp_barrierf(x + 0x1p120f);
t = 1 + 0 / x;