Merge release-4-5-patches into release-4-6

[alexxy/gromacs.git] / include / maths.h

diff --git a/include/maths.h b/include/maths.h
index ed7503205c0f96b1a07cb5fd53e43744d417dafe..21755c2115c37696ac084e9c9adbbb706cf9e100 100644 (file)
--- a/include/maths.h
+++ b/include/maths.h
@@ -60,6 +60,10 @@ extern "C" {
 #ifndef M_SQRT2
 #define M_SQRT2 sqrt(2.0)
 #endif
+
+#ifndef M_1_PI
+#define M_1_PI      0.31830988618379067154
+#endif
     
 /* Suzuki-Yoshida Constants, for n=3 and n=5, for symplectic integration  */
 /* for n=1, w0 = 1 */