Documentation

gammaln

Logarithm of gamma function

Syntax

Y = gammaln(A)

Description

Y = gammaln(A) returns the logarithm of the gamma function, gammaln(A) = log(gamma(A)). Input A must be nonnegative and real. The gammaln command avoids the underflow and overflow that may occur if it is computed directly using log(gamma(A)).

Introduced before R2006a

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