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//# SquareMatrix2.cc: explicit instantiation for SquareMatrix
//# Copyright (C) 1996
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//# Includes
#include <casacore/scimath/Mathematics/SquareMatrix.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
SquareMatrix<Complex,4>&
directProduct(SquareMatrix<Complex,4>& result,
const SquareMatrix<Complex,2>& left,
const SquareMatrix<Complex,2>& right)
{
const Int n=2; // Instantiation for n==2
switch (left.type_p) {
case SquareMatrix<Complex,2>::ScalarId:
switch (right.type_p) {
case SquareMatrix<Complex,2>::ScalarId: {
result.a_p[0][0]=left.a_p[0][0]*right.a_p[0][0];
result.type_p=SquareMatrix<Complex,2>::ScalarId;
return result;
}
case SquareMatrix<Complex,2>::Diagonal: {
Complex tmp=left.a_p[0][0];
for (Int i=0; i<n*n; i++)
result.a_p[i][i]=tmp*right.a_p[i%n][i%n];
result.type_p=SquareMatrix<Complex,2>::Diagonal;
return result;
}
case SquareMatrix<Complex,2>::General: {
Complex tmp=left.a_p[0][0];
for (Int i=0; i<n*n; i++)
for (Int j=0; j<n*n; j++) {
if (i/n == j/n)
result.a_p[i][j]=tmp*right.a_p[i%n][j%n];
else result.a_p[i][j]=Complex();
}
result.type_p=SquareMatrix<Complex,2>::General;
return result;
}
}
CASACORE_FALLTHROUGH;
case SquareMatrix<Complex,2>::Diagonal:
switch (right.type_p) {
case SquareMatrix<Complex,2>::ScalarId: {
Complex tmp=right.a_p[0][0];
for (Int i=0; i<n*n; i++)
result.a_p[i][i]=left.a_p[i/n][i/n]*tmp;
result.type_p=SquareMatrix<Complex,2>::Diagonal;
return result;
}
case SquareMatrix<Complex,2>::Diagonal: {
for (Int i=0; i<n*n; i++)
result.a_p[i][i]=left.a_p[i/n][i/n]*right.a_p[i%n][i%n];
result.type_p=SquareMatrix<Complex,2>::Diagonal;
return result;
}
case SquareMatrix<Complex,2>::General: {
for (Int i=0; i<n*n; i++) {
for (Int j=0; j<n*n; j++) {
if (i/n == j/n)
result.a_p[i][j]=left.a_p[i/n][i/n]*right.a_p[i%n][j%n];
else result.a_p[i][j]=Complex();
}
}
result.type_p=SquareMatrix<Complex,2>::General;
return result;
}
}
CASACORE_FALLTHROUGH;
case SquareMatrix<Complex,2>::General:
switch (right.type_p) {
case SquareMatrix<Complex,2>::ScalarId: {
Complex tmp=right.a_p[0][0];
for (Int i=0; i<n*n; i++)
for (Int j=0; j<n*n; j++) {
if (i%n == j%n)
result.a_p[i][j]=left.a_p[i/n][j/n]*tmp;
else result.a_p[i][j]=Complex();
}
result.type_p=SquareMatrix<Complex,2>::General;
return result;
}
case SquareMatrix<Complex,2>::Diagonal: {
for (Int i=0; i<n*n; i++)
for (Int j=0; j<n*n; j++) {
if (i%n == j%n)
result.a_p[i][j]=left.a_p[i/n][j/n]*right.a_p[i%n][j%n];
else result.a_p[i][j]=Complex();
}
result.type_p=SquareMatrix<Complex,2>::General;
return result;
}
case SquareMatrix<Complex,2>::General: {
for (Int i=0; i<n*n; i++)
for (Int j=0; j<n*n; j++)
result.a_p[i][j]=left.a_p[i/n][j/n]*right.a_p[i%n][j%n];
result.type_p=SquareMatrix<Complex,2>::General;
return result;
}
}
}
// NOTREACHED
return result;
}
SquareMatrix<Complex,2> conj(const SquareMatrix<Complex,2>& m) {
SquareMatrix<Complex,2> result = m;
result.conj();
return result;
}
} //# NAMESPACE CASACORE - END
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