public void test3Random() {
java.util.Random r = new java.util.Random();
int ntest = 1000;
for (int itest = 0; itest < ntest; ++itest) {
SymmetricTridiagonalFilter stf = makeRandomFilter();
boolean inplace = r.nextBoolean(); // apply in-place?
int n1 = 2 + r.nextInt(11);
int n2 = 2 + r.nextInt(12);
int n3 = 2 + r.nextInt(13);
float[][][] t = randfloat(r, n1, n2, n3);
float[][][] x = copy(t);
float[][][] y = inplace ? x : zerofloat(n1, n2, n3);
float[][][] z = inplace ? x : zerofloat(n1, n2, n3);
stf.apply1(x, y);
stf.applyInverse1(y, z);
assertEqual(t, x);
assertEqual(t, z);
stf.apply2(x, y);
stf.applyInverse2(y, z);
assertEqual(t, x);
assertEqual(t, z);
stf.apply3(x, y);
stf.applyInverse3(y, z);
assertEqual(t, x);
assertEqual(t, z);
}
}
public void test3Simple() {
int n1 = 11;
int n2 = 12;
int n3 = 13;
float[][][] r = randfloat(n1, n2, n3);
float[][][] x = copy(r);
float[][][] y = copy(r);
SymmetricTridiagonalFilter stf = new SymmetricTridiagonalFilter(2.6, 2.5, 2.7, 1.2);
stf.apply1(x, x);
stf.apply2(x, x);
stf.apply3(x, x);
stf.apply1(y, y);
y = transpose12(y);
stf.apply1(y, y);
y = transpose12(y);
y = transpose23(y);
stf.apply2(y, y);
y = transpose23(y);
assertEqual(x, y);
}