Android Utililty Methods Factorial

List of utility methods to do Factorial

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Description

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

Method

longfactorial(final int n)
Returns n!. 
if (n < 0) {
    throw new NotPositiveException(
            LocalizedFormats.FACTORIAL_NEGATIVE_PARAMETER, n);
if (n > 20) {
    throw new MathArithmeticException();
return FACTORIALS[n];
...
doublefactorialDouble(final int n)
Compute n!, the factorial of n (the product of the numbers 1 to n), as a double . 
if (n < 0) {
    throw new NotPositiveException(
            LocalizedFormats.FACTORIAL_NEGATIVE_PARAMETER, n);
if (n < 21) {
    return FACTORIALS[n];
return FastMath
...
doublefactorialLog(final int n)
Compute the natural logarithm of the factorial of n . 
if (n < 0) {
    throw new NotPositiveException(
            LocalizedFormats.FACTORIAL_NEGATIVE_PARAMETER, n);
if (n < 21) {
    return FastMath.log(FACTORIALS[n]);
double logSum = 0;
...