Fix for MSVC++

diff --git a/src/FDM/JSBSim/FGUtility.cpp b/src/FDM/JSBSim/FGUtility.cpp
index 0d672d56d808a9af4b2c4f24fa4272f842575bf3..4b72f6132558d5d91b2ef4d0b94b25c39aca3f78 100644 (file)
--- a/src/FDM/JSBSim/FGUtility.cpp
+++ b/src/FDM/JSBSim/FGUtility.cpp
@@ -57,10 +57,10 @@ INCLUDES
 #include "FGState.h"
 #include "FGFDMExec.h"
 
-#ifndef M_PI
+#ifndef M_PI_2
 /* get a definition for pi */
 #include <Include/fg_constants.h>
-#define M_PI FG_PI
+#define M_PI_2 FG_PI_2
 #endif
 
 /*******************************************************************************