gammaln

Logarithm of gamma function

Syntax

• R = gammaln(M)

Input argument

• M - a real single or real double matrix.

Output argument

• R - result of gammaln function.

Description

The function gammaln(A) computes the natural logarithm of the gamma function for a given input A, expressed as gammaln(A) = log(gamma(A)).

It's important to note that A must be a nonnegative real number.

Using gammaln helps prevent potential underflow and overflow issues that might arise if directly computing log(gamma(A)).

Example

R = gammaln([0:0.1:pi])

See also

gamma.

History

Version	Description
1.0.0	initial version

Author

Allan CORNET