diff --git a/lib/msun/src/math.h b/lib/msun/src/math.h
index 7e91916e594c..842793b6cef6 100644
--- a/lib/msun/src/math.h
+++ b/lib/msun/src/math.h
@@ -40,6 +40,12 @@ extern const union __nan_un {
 #define	INFINITY	HUGE_VALF
 #define	NAN		(__nan.__uf)
 
+#if __ISO_C_VISIBLE >= 1999
+#define	MATH_ERRNO	1
+#define	MATH_ERREXCEPT	2
+#define	math_errhandling	0
+#endif
+
 /* Symbolic constants to classify floating point numbers. */
 #define	FP_INFINITE	0x01
 #define	FP_NAN		0x02