Java Utililty Methods Square

double square(double a)
square

return a * a;

double[] square(double[] in, double[] out)
Squares each element of the input vector and puts it into the out vector.

if (out == null) {
 out = new double[in.length];
if (in.length != out.length) {
 throw new IllegalArgumentException("in.length != out.length: " + in.length + " vs. " + out.length);
for (int i = 0; i < in.length; i++) {
 double a = in[i];
...

double[][] square(double[][] m)
Multiply a square matrix by itself

assert (m[0].length == m.length);
int n = m.length;
double[][] res = new double[n][n];
for (int i = 0; i < n; i++) {
 for (int j = 0; j <= i; j++) {
 double sum = 0.0;
 for (int k = 0; k < n; k++)
 sum += m[i][k] * m[j][k];
...

double square(final double num)
Simple square number, just num * num.

return num * num;

float square(float number, int power)
square

float newNumber = 1;
for (int i = 0; i < power; i++) {
 newNumber = newNumber * number;
return newNumber;

int square(int n)
Return square of N.

if (n < sqCache.length) {
 return sqCache[n];
return n * n;

int square(int value)
square

return value * value;