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Scilab help >> Special Functions > gammaln

gammaln

The logarithm of gamma function.

Calling Sequence

y = gammaln(x)

Arguments

x

real vector

y

real vector with same size.

Description

gammaln(x) evaluates the logarithm of gamma function at all the elements of x, avoiding underflow and overflow. x must be real.

Examples

gammaln(0.5)

See Also

  • gamma — The gamma function.
  • dlgamma — derivative of gammaln function, psi function

Authors

W. J. Cody and L. Stoltz (code from Netlib (specfun))

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with contributors 		Last updated:
Thu May 12 11:44:24 CEST 2011