--- pymath.h.original	2008-07-24 17:30:35.000000000 +0300
+++ pymath.h	2008-07-24 17:32:41.000000000 +0300
@@ -43,4 +43,10 @@
 #endif
 
+/* error and gamma functions */
+extern double erf(double);
+extern double erfc(double);
+extern double lgamma(double);
+extern double tgamma(double);
+
 /* extra declarations */
 #ifndef _MSC_VER