X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flinal%2Fsquarematrix.h;h=1cdc56726455f9ab2b97589b1b93bacbad702eac;hb=643aa7b2317f88463f66da11e595ebe0f6c9621d;hp=4cdc9e88f7288654d4dcbae9d2ec006517bfb734;hpb=a3d9772a9fd483278b6248a811dc6f4ce968892b;p=libs%2Fmath.git

diff --git a/source/linal/squarematrix.h b/source/linal/squarematrix.h
index 4cdc9e8..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"
 
@@ -14,14 +15,18 @@ public:
 	virtual ~not_invertible() throw() { }
 };
 
+/**
+A mathematical matrix with S rows and columns.  Some operations are provided
+here that are only possible for square matrices.
+*/
 template<typename T, unsigned S>
 class SquareMatrix: public Matrix<T, S, S>
 {
 public:
 	SquareMatrix() { }
-	SquareMatrix(const T *);
+	SquareMatrix(const T *d): Matrix<T, S, S>(d) { }
 	template<typename U>
-	SquareMatrix(const Matrix<U, S, S> &);
+	SquareMatrix(const Matrix<U, S, S> &m): Matrix<T, S, S>(m) { }
 
 	static SquareMatrix identity();
 
@@ -30,17 +35,6 @@ public:
 	SquareMatrix &invert();
 };
 
-template<typename T, unsigned S>
-SquareMatrix<T, S>::SquareMatrix(const T *d):
-	Matrix<T, S, S>(d)
-{ }
-
-template<typename T, unsigned S>
-template<typename U>
-SquareMatrix<T, S>::SquareMatrix(const Matrix<U, S, S> &m):
-	Matrix<T, S, S>(m)
-{ }
-
 template<typename T, unsigned S>
 inline SquareMatrix<T, S> SquareMatrix<T, S>::identity()
 {
@@ -53,13 +47,14 @@ inline SquareMatrix<T, S> SquareMatrix<T, S>::identity()
 template<typename T, unsigned S>
 SquareMatrix<T, S> &SquareMatrix<T, S>::operator*=(const SquareMatrix<T, S> &m)
 {
-	Matrix<T, S, S>::operator*=(m);
-	return *this;
+	return *this = *this*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)
 	{