public void SubtractTest1()
{
double a = 0.1;
double[,] b =
{
{ 0.2, 0.5, 0.2 },
{ 0.2, 0.7, 0.1 },
};
double[,] expected =
{
{ -0.1, -0.4, -0.1 },
{ -0.1, -0.6, -0.0 },
};
double[,] actual = Elementwise.Subtract(a, b);
Assert.IsTrue(expected.IsEqual(actual, 1e-6));
}