public virtual void test_map()
{
double[][] @base = new double[][]
{
new double[] { 1d, 2d },
new double[] { 3d, 4d },
new double[] { 5d, 6d }
};
DoubleMatrix test = DoubleMatrix.copyOf(@base);
assertMatrix(test.map(v => 1 / v), 1d, 1d / 2d, 1d / 3d, 1d / 4d, 1d / 5d, 1d / 6d);
}