Fixed compilation error under Windows

53b4e664 · Peter Eastman · 95e059dc · 53b4e664
Commit 53b4e664 authored Oct 28, 2009 by Peter Eastman
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openmmapi/src/NonbondedForceImpl.cpp openmmapi/src/NonbondedForceImpl.cpp +4 -0

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--- a/openmmapi/src/NonbondedForceImpl.cpp
+++ b/openmmapi/src/NonbondedForceImpl.cpp
@@ -36,6 +36,10 @@
 #include <cmath>
 #include <sstream>
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
 using namespace OpenMM;
 using namespace std;