X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmtdm.cc;h=4c27b3b6005197a493f0050f39aa85a42b7db28d;hb=3dfb0c7ae9c4863cf2e92032dcaa0baf805717db;hp=dceb4f8406fb7c7951f18cfcc4b3a5e053b7cdd7;hpb=e5258d4ed18a358f9812acd971336272508f7038;p=ardour.git

diff --git a/libs/ardour/mtdm.cc b/libs/ardour/mtdm.cc
index dceb4f8406..4c27b3b600 100644
--- a/libs/ardour/mtdm.cc
+++ b/libs/ardour/mtdm.cc
@@ -16,9 +16,11 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
+#include <math.h>
+
 #include "ardour/mtdm.h"
 
-MTDM::MTDM (void)
+MTDM::MTDM ()
 	: _cnt (0)
 	, _inv (0)
 {