---  src/marsyas/LPC.cpp	2015-03-01 22:31:15.000000000 +0000
+++  src/marsyas/LPC.new.cpp	2015-09-18 09:38:40.371974107 +0100
@@ -24,8 +24,8 @@
    Linear Prediction Coefficients (LPC). Features commonly used 
 in Speech Recognition research. 
 */
-
-
+#include <cstdlib> 
+#include <math.h>
 #include "LPC.h"
 
 LPC::LPC( unsigned int inSize )