From 5d0a1c956bfe4116b358da5bcc4facf8887aaa26 Mon Sep 17 00:00:00 2001
From: Jonas 'Sortie' Termansen <sortie@maxsi.org>
Date: Thu, 27 Nov 2014 18:37:30 +0100
Subject: [PATCH] Fix math.h not providing some C99 functions.

---
 libm/include/math.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libm/include/math.h b/libm/include/math.h
index 2a08e1a6..316c0020 100644
--- a/libm/include/math.h
+++ b/libm/include/math.h
@@ -219,7 +219,7 @@ double fabs(double);
 double floor(double);
 double fmod(double, double);
 
-#if __USE_SORTIX || __USE_XOPEN
+#if __USE_SORTIX || 1999 <= __USE_C || __USE_XOPEN
 double erf(double);
 double erfc(double);
 double gamma(double);
@@ -232,9 +232,9 @@ double lgamma(double);
 double y0(double);
 double y1(double);
 double yn(int, double);
-#endif  /* __USE_SORTIX || __USE_XOPEN */
+#endif  /* __USE_SORTIX ||  1999 <= __USE_C || __USE_XOPEN */
 
-#if __USE_SORTIX || 500 <= __USE_XOPEN
+#if __USE_SORTIX || 1999 <= __USE_C || 500 <= __USE_XOPEN
 double acosh(double);
 double asinh(double);
 double atanh(double);
@@ -247,7 +247,7 @@ double nextafter(double, double);
 double remainder(double, double);
 double rint(double);
 double scalb(double, double);
-#endif /* __USE_SORTIX || 500 <= __USE_XOPEN */
+#endif /* __USE_SORTIX || 1999 <= __USE_C || 500 <= __USE_XOPEN */
 
 /*
  * ISO C99