; $Id: gamma.pro,v 1.3.6.1 1999/01/16 16:40:11 scottm Exp $
;
; Copyright (c) 1995-1999, Research Systems, Inc.  All rights reserved.
;       Unauthorized reproduction prohibited.

;+
; NAME:
;       GAMMA
; PURPOSE:
;	The introduction of the GAMMA function as a built in system routine
;	in IDL 4.0 caused inconvenience to customers with existing code
;	in which GAMMA had been used as a variable, because IDL system
;	routines have precedence over variable names. To minimize this
;	problem, RSI has renamed GAMMA to NR_GAMMA.
;
;	This wrapper serves to make NR_GAMMA available under the name
;	GAMMA as documented in the IDL Reference Manual. However, since
;	IDL library routines have lower precedence than variables, programs
;	that use GAMMA as a variable name will work as before.
;
;	See the documentation for GAMMA in the IDL Reference manual for
;	details on arguments, keywords, and results.
; 
;
; MODIFICATION HISTORY:
;	3 July 1995, AB, RSI.
;-

function gamma, x, _EXTRA=EXTRA_KW

  return, NR_GAMMA(x, _EXTRA=EXTRA_KW)

end