GAMMA Function

Returns the value of the gamma function.

Category:

Mathematical

Syntax

GAMMA(argument)

specifies a numeric constant, variable, or expression.

Restriction

Nonpositive integers are invalid.

The GAMMA function returns the integral given by

\begin{matrix} G A M M A (x) = \int_{0}^{\infty} t^{x - 1} ε^{- t} d t . \end{matrix}

For positive integers, GAMMA(x) is (x − 1)!. This function is commonly denoted by

Γ (x)

This SAS statement produces this result.

SAS Statement	Result
x=gamma(6);	120