Java Utililty Methods Number Power

List of utility methods to do Number Power

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Description

The list of methods to do Number Power are organized into topic(s).

Method

floatpow(final float a, final float b)
Computes a fast approximation to Math.pow(a, b). 
return (float) Math.pow(a, b);
longpow(final int a, final int b)
Integer version of Math#pow(double,double) . 
long c = 1;
for (int i = 0; i < b; ++i)
    c *= a;
return c;
intpow(final int a, final int b)
pow 
if (b == 0)
    return 1;
else if (b == 1)
    return a;
else {
    int result = a;
    for (int i = 1; i < b; i++)
        result *= a;
...
intpow(final int b, final int e)
Retrieves the value of the base raised to the power of the exponent 
if (e < 0) {
    throw new IllegalArgumentException("pow does not support negative exponent: " + e);
int v = 1;
for (int i = 0; i < e; i++) {
    v *= b;
return v;
...
longpow(final long base, final long exponent)
pow 
if (exponent == 0) {
    return 1;
} else {
    long start = base;
    for (int i = 1; i < exponent; i++) {
        start *= base;
    return start;
...
floatpow(float a, float b)
pow 
return (float) StrictMath.pow(a, b);
floatPow(float base, float exponent)
Pow 
return (float) Math.pow(base, exponent);
floatpow(float x, int y)
Raises first argument to the power of the second argument. 
float val = 1.0f;
for (int i = 0; i < Math.abs(y); i++) {
    val *= x;
if (y < 0) {
    return 1.0f / val;
return val;
...
float[]pow(float[] inData, float rate)
pow 
float[] out = new float[inData.length];
for (int i = 0; i < inData.length; i++) {
    out[i] = (float) Math.pow(inData[i], rate);
return out;
voidpow(float[][] in)
pow 
int width = in[0].length;
int height = in.length;
for (int yy = 0; yy < height; yy++) {
    for (int xx = 0; xx < width; xx++) {
        in[yy][xx] = in[yy][xx] * in[yy][xx];