sim: sh: fix isnan redefinition with mingw targets

The code assumes that all _WIN32 targets are the same and can
define isnan to _isnan.  For mingw targets, they provide an isnan
define already, so no need for the fallback here.

diff --git a/sim/sh/interp.c b/sim/sh/interp.c
index 2bae4484e349ae37e2498cefb9a550ef4228e61b..c4ac5b3e66b1efbccb31c022924fdf4e2bfd6ae6 100644 (file)
--- a/sim/sh/interp.c
+++ b/sim/sh/interp.c
@@ -65,8 +65,10 @@
 
 #ifdef _WIN32
 #include <float.h>             /* Needed for _isnan() */
+#ifndef isnan
 #define isnan _isnan
 #endif
+#endif
 
 #ifndef SIGBUS
 #define SIGBUS SIGSEGV