@Test public void g_PermutedMatrix() {
// general M*N matrix
VectorMatrixMN mmn=new VectorMatrixMN(6 ,7);
// permuted matrix
PermutedMatrix pmm=new PermutedMatrix(mmn,
Indexz.createRandomPermutation(mmn.rowCount()),
Indexz.createRandomPermutation(mmn.columnCount()));
doGenericTests(pmm);
doGenericTests(pmm.subMatrix(1, 4, 1, 5));
}