Ticket #6230: math.h.diff

headers/posix/math.h

@@ -24 +24 @@
 #define __HUGE_VAL_v    0x7ff0000000000000LL
 #define __huge_val_t    union { unsigned char __c[8]; long long __ll; double __d; }
 #ifndef HUGE_VAL
-#   define HUGE_VAL     (((__huge_val_t) { __ll: __HUGE_VAL_v }).__d)
+#   ifdef __clang__
+#       define HUGE_VAL     __builtin_huge_val()
+#   else
+#       define HUGE_VAL     (((__huge_val_t) { __ll: __HUGE_VAL_v }).__d)
+#   endif
 #endif
 
 #define __HUGE_VALF_v   0x7f800000L
 #define __huge_valf_t   union { unsigned char __c[4]; long __l; float __f; }
-#define HUGE_VALF       (((__huge_valf_t) { __l: __HUGE_VALF_v }).__f)
+#ifdef __clang__
+#   define HUGE_VALF        __builtin_huge_valf()
+#else
+#   define HUGE_VALF        (((__huge_valf_t) { __l: __HUGE_VALF_v }).__f)
+#endif
 
 /* TODO: define HUGE_VALL for long doubles */
 
 #define __NAN_VALF_v    0x7fc00000L
-#define NAN             (((__huge_valf_t) { __l: __NAN_VALF_v }).__f)
+#ifdef __clang__
+#   define NAN              __builtin_nanf("")
+#else
+#   define NAN              (((__huge_valf_t) { __l: __NAN_VALF_v }).__f)
+#endif
 
-#define INFINITY        HUGE_VALF
+#ifdef __clang__
+#   define INFINITY     __builtin_inff()
+#else
+#   define INFINITY     HUGE_VALF
+#endif
 
 /* floating-point categories */
 #define FP_NAN          0