// Test Mglin
System.out.println("Testing Mglin");
u[midl][midl]=2.0;
Mglin mglin = new Mglin(u,20);u=mglin.u;
// System.out.printf(endl << " Test that solution satisfies difference equations:";
// System.out.printf(endl;
// System.out.printf(setprecision(2);
// for (i=NSTEP;i<JMAX-1;i+=NSTEP) {