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-rw-r--r--include/c99_math.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/c99_math.h b/include/c99_math.h
index 0a359ebb762..35173c68d1c 100644
--- a/include/c99_math.h
+++ b/include/c99_math.h
@@ -144,4 +144,17 @@ llrintf(float f)
#endif
+#ifndef M_PI
+#define M_PI (3.14159265358979323846)
+#endif
+
+#ifndef M_E
+#define M_E (2.7182818284590452354)
+#endif
+
+#ifndef M_LOG2E
+#define M_LOG2E (1.4426950408889634074)
+#endif
+
+
#endif /* #define _C99_MATH_H_ */