Include math.h.

diff --git a/src/w32font.c b/src/w32font.c
index 7c7b9faa04560b8601fec4166ad2cb3a9e258100..92399f6e4f932e6b7ca9e56430705492a375d7d1 100644 (file)
--- a/src/w32font.c
+++ b/src/w32font.c
@@ -20,6 +20,7 @@ Boston, MA 02110-1301, USA.  */
 
 #include <config.h>
 #include <windows.h>
+#include <math.h>
 
 #include "lisp.h"
 #include "w32term.h"