X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fnasal%2Fmathlib.c;h=d967ceedd3cffc66d2e6ac6f3511799ca99e7c45;hb=a0bdec284624820feb0a96a06c0c38e2f07d5e4e;hp=07f8ef81dba63f056899fea113cde5930dc114bf;hpb=1786692406214447db12b9d5af5364582af23d3b;p=simgear.git

diff --git a/simgear/nasal/mathlib.c b/simgear/nasal/mathlib.c
index 07f8ef81..d967ceed 100644
--- a/simgear/nasal/mathlib.c
+++ b/simgear/nasal/mathlib.c
@@ -1,3 +1,7 @@
+#ifdef _MSC_VER
+#define _USE_MATH_DEFINES
+#endif
+
 #include <math.h>
 #include <string.h>