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-rw-r--r--math/bits/mathcalls.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index 67e86a7d51..30bbb7c0aa 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -145,10 +145,12 @@ __MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y));
 /* Return the square root of X.  */
 __MATHCALL (sqrt,, (_Mdouble_ __x));
 
-#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
+#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC9X
 /* Return `sqrt(X*X + Y*Y)'.  */
 __MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));
+#endif
 
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
 /* Return the cube root of X.  */
 __MATHCALL (cbrt,, (_Mdouble_ __x));
 #endif