--- deliantra/Deliantra-Client/Client.xs	2007/08/10 04:02:13	1.221
+++ deliantra/Deliantra-Client/Client.xs	2007/08/11 06:34:26	1.222
@@ -19,6 +19,11 @@
 
 #ifdef _WIN32
 # undef pipe
+// microsoft vs. C
+# define sqrtf(x) sqrt(x)
+# define roundf(x) (int)(x)
+# define atan2f(x,y) atan2(x,y)
+# define M_PI 3.14159265f
 #endif
 
 #include <assert.h>