X-Git-Url: http://git.tdb.fi/?p=libs%2Fmath.git;a=blobdiff_plain;f=source%2Flinal%2Fsquarematrix.h;h=1cdc56726455f9ab2b97589b1b93bacbad702eac;hp=0af9a7454852cb5106382fcda2a4f1c5e2aaf824;hb=643aa7b2317f88463f66da11e595ebe0f6c9621d;hpb=fe9d42c7cb18bc1db6d278bdc2f8372822d025bf

diff --git a/source/linal/squarematrix.h b/source/linal/squarematrix.h
index 0af9a74..1cdc567 100644
--- a/source/linal/squarematrix.h
+++ b/source/linal/squarematrix.h
@@ -1,6 +1,7 @@
 #ifndef MSP_LINAL_SQUAREMATRIX_H_
 #define MSP_LINAL_SQUAREMATRIX_H_
 
+#include <cmath>
 #include <stdexcept>
 #include "matrix.h"
 
@@ -52,6 +53,8 @@ SquareMatrix<T, S> &SquareMatrix<T, S>::operator*=(const SquareMatrix<T, S> &m)
 template<typename T, unsigned S>
 SquareMatrix<T, S> &SquareMatrix<T, S>::invert()
 {
+	using std::abs;
+
 	SquareMatrix<T, S> r = identity();
 	for(unsigned i=0; i<S; ++i)
 	{