;***************************************************
function WLSHIFT, x
;+
; NAME:
; 	WLSHIFT
;
; PURPOSE:
;	This function performs a circular left shift of 1-d signal.
;
; CATEGORY:
;	Wavelets
;
; CALLING SEQUENCE:
;     l = WLSHIFT(x)
;
; INPUTS:
;    x:	1-d signal
;
; OUTPUTS:
;    l:	shifted 1-d signal 
;
; EXAMPLE:
;
; NOTES:
;	l(i-1) = x(i) except l(n-1) = x(0)
;
; MODIFICATION HISTORY:
; 	Written by:	Amara Graps		October, 1994
;Translated from MatLab Wavelab routine: lshift.m
;-

	y = [x(1 : N_ELEMENTS(x)-1),x(0)]

;
; Algorithm Source:  WaveLab Version 0.600
; WaveLab WWW site: http://playfair.stanford.edu/ 
; WaveLab Questions? e-mail wavelab@playfair.stanford.edu
;   
    

RETURN, y 
END 
;***************************************************