Guard against multiple definition of M_PI

be0205e3 · Sam Mikes · 169083af · be0205e3
Commit be0205e3 authored Apr 27, 2014 by Sam Mikes
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openmmapi/include/openmm/internal/MSVC_erfc.h openmmapi/include/openmm/internal/MSVC_erfc.h +2 -0

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--- a/openmmapi/include/openmm/internal/MSVC_erfc.h
+++ b/openmmapi/include/openmm/internal/MSVC_erfc.h
@@ -9,7 +9,9 @@
 */
 #if defined(_MSC_VER) 
+#ifndef M_PI
 #define M_PI 3.14159265358979323846264338327950288
+#endif
 #if _MSC_VER <= 1700 // 1700 is VC11, 1800 is VC12 
 /***************************