int _fpclass (double);
int _isnan (double);
-int _isinf (double); // not exported
-int _isnanl (long double); // not exported
-int _isinfl (long double); // not exported
+int _isinf (double); /* not exported */
+int _isnanl (long double); /* not exported */
+int _isinfl (long double); /* not exported */
#define isnan(x) _isnan(x)
#define isinf(x) _isinf(x)