function [g] = shift(d,y)
%SHIFT    Circular shifts left a 1-D vector
% X = SHIFT(A, N) will shift the vector A to the left by N number of elements.
% The shifted elements are wrapped back around to the end of the vector. 

%Shane Crockett  - 11JUN98
%Developed for use in "straightening out" hyberbolic chirp

temp = d(1:y);
g = [d((y+1):length(d)) temp];


%x = length(d) - 1;
%for c = y:x;
%   g(1,c - (y-1)) = d(1,1+c);
%end
%g = [g d(1:y)];