Index: src/libcfa/math
===================================================================
--- src/libcfa/math	(revision dc5376a15ff2e64a5f2ea5042812b95f826a9656)
+++ src/libcfa/math	(revision 43385ca81ad774a9c833abcd37fa12d82fd1c49c)
@@ -184,5 +184,5 @@
 
 float atan2( float, float );
-double atan2( double, double );
+// extern "C" { double atan2( double, double ); }
 long double atan2( long double, long double );