Alex Henrie : msvcrt: Don't set errno in _logb(f) if x is ±INF.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 70c338c27ad5b82ffa5540f8ee3fd81cdc5615f2
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=70c338c27ad5b82ffa5540f8ee...

Author: Alex Henrie <alexhenrie24(a)gmail.com>
Date:   Thu Jul 27 02:26:24 2017 -0600

msvcrt: Don't set errno in _logb(f) if x is ±INF.

Signed-off-by: Alex Henrie <alexhenrie24(a)gmail.com>
Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/msvcrt/math.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 2433376..82f56ca 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -141,7 +141,7 @@ INT CDECL MSVCRT__isnanf( float num )
  */
 float CDECL MSVCRT__logbf( float num )
 {
-    if (!finitef(num)) *MSVCRT__errno() = MSVCRT_EDOM;
+    if (isnanf(num)) *MSVCRT__errno() = MSVCRT_EDOM;
     else if (!num) *MSVCRT__errno() = MSVCRT_ERANGE;
     return logbf(num);
 }
@@ -789,7 +789,7 @@ __int64 CDECL _abs64( __int64 n )
  */
 double CDECL MSVCRT__logb(double num)
 {
-  if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
+  if (isnan(num)) *MSVCRT__errno() = MSVCRT_EDOM;
   else if (!num) *MSVCRT__errno() = MSVCRT_ERANGE;
   return logb(num);
 }