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msvcrt: Fix logf implementation. 

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51222
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2021-06-07 12:58:26 +02:00 committed by Alexandre Julliard
parent 4522c54a13
commit 673815e0ed
1 changed files with 3 additions and 3 deletions
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6
dlls/msvcrt/math.c
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@ -1254,7 +1254,7 @@ float CDECL logf( float x )
if (ix - 0x00800000 >= 0x7f800000 - 0x00800000) {
/* x < 0x1p-126 or inf or nan. */
if (ix * 2 == 0)
return math_error(_SING, "logf", x, 0, -1.0 / x);
return math_error(_SING, "logf", x, 0, (ix & 0x80000000 ? 1.0 : -1.0) / x);
if (ix == 0x7f800000) /* log(inf) == inf. */
return x;
if (ix * 2 > 0xff000000)
@ -1273,7 +1273,7 @@ float CDECL logf( float x )
tmp = ix - 0x3f330000;
i = (tmp >> (23 - 4)) % (1 << 4);
k = (INT32)tmp >> 23; /* arithmetic shift */
iz = ix - (tmp & 0xff << 23);
iz = ix - (tmp & (0x1ffu << 23));
invc = T[i].invc;
logc = T[i].logc;
z = *(float*)&iz;
@ -2966,7 +2966,7 @@ double CDECL log( double x )
if (top - 0x0010 >= 0x7ff0 - 0x0010) {
/* x < 0x1p-1022 or inf or nan. */
if (ix * 2 == 0)
return math_error(_SING, "log", x, 0, -1.0 / x);
return math_error(_SING, "log", x, 0, (top & 0x8000 ? 1.0 : -1.0) / x);
if (ix == 0x7ff0000000000000ULL) /* log(inf) == inf. */
return x;
if ((top & 0x7ff0) == 0x7ff0 && (ix & 0xfffffffffffffULL))