<< gamma

Special functions

gcd >>

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gammaln

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Logarithm of gamma function

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Syntax

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R = gammaln(M)

Input argument

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M

a real single or real double matrix.

Output argument

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R

result of gammaln function.

Description

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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

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

See also

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gamma.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET