@Test public void g_VectorMatrix() {
// specialised Mx3 matrix
VectorMatrixM3 mm3=new VectorMatrixM3(10);
Arrayz.fillNormal(mm3,101);
doGenericTests(mm3);
doGenericTests(mm3.subMatrix(1, 1, 1, 1));
// general M*N matrix
VectorMatrixMN mmn=new VectorMatrixMN(6 ,7);
randomise(mmn);
doGenericTests(mmn);