GAMMA

9.110 `GAMMA` — Gamma function

Description:

GAMMA(X) computes Gamma (\Gamma) of X. For positive, integer values of X the Gamma function simplifies to the factorial function \Gamma(x)=(x-1)!.

Standard:

Fortran 2008 and later

Class:

Elemental function

Syntax:

X = GAMMA(X)

Arguments:

`X`	Shall be of type `REAL` and neither zero nor a negative integer.

Return value:

The return value is of type REAL of the same kind as X.

Example:

program test_gamma
  real :: x = 1.0
  x = gamma(x) ! returns 1.0
end program test_gamma

Specific names:

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GAMMA

9.110 GAMMA — Gamma function

9.110 `GAMMA` — Gamma function