Removed unneeded code on OSX.
#ifndef INFINITYF
#define INFINITYF ((float)INFINITY)
#endif
-#ifdef __APPLE__
-extern int isinf(double x);
-extern int isnan(double x);
-#else
#if ! (defined(isinf) || HAVE_DECL_ISINF)
#define isinf(x) (DBL_MAX/((double)(x))==0.0)
#endif /* !HAVE_DECL_ISINF */
@@ -38,6 +34,5 @@ extern int isnan(double x);
#if ! (defined(isfinite) || HAVE_DECL_ISFINITE)
#define isfinite(x) (!(isinf(x)||isnan(x)))
#endif /* !HAVE_DECL_ISFINITE */
-#endif /*!APPLE*/
#endif /* _ISNAN_H */
