From 130c559e83c6dedc94b820411a9e9d0995c6bcc0 Mon Sep 17 00:00:00 2001
From: Etienne Jacques <etienne.rtp@gmail.com>
Date: Fri, 10 Feb 2017 22:16:10 -0800
Subject: Fix compilation with gcc with -std=c11 option.

---
 src/projects.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src')

diff --git a/src/projects.h b/src/projects.h
index 33af9ca7..f64d1a4f 100644
--- a/src/projects.h
+++ b/src/projects.h
@@ -105,6 +105,12 @@ extern double hypot(double, double);
 #define M_PI            3.14159265358979310
 #define M_PI_2          1.57079632679489660
 #define M_PI_4          0.78539816339744828
+#define M_2_PI          0.63661977236758134308
+#endif
+
+/* M_SQRT2 might be missing */
+#ifndef M_SQRT2
+#define M_SQRT2         1.41421356237309504880
 #endif
 
 /* some more useful math constants and aliases */
-- 
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