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- function y = postpad(x,l,c)
-
- # postpad(x,l)
- # Appends zeros to the vector x until it is of length l.
- # postpad(x,l,c) appends the constant c instead of zero.
- #
- # If length(x) > l, elements from the end of x are removed
- # until a vector of length l is obtained.
-
- # Author:
- # Tony Richardson
- # amr@mpl.ucsd.edu
- # June 1994
-
- if(nargin == 2)
- c = 0;
- elseif(nargin<2 || nargin>3)
- usage ("postpad(x,l) or postpad(x,l,c)");
- endif
-
- if(is_matrix(x))
- error("first argument must be a vector");
- elseif(!is_scalar(l))
- error("second argument must be a scaler");
- endif
-
- if(l<0)
- error("second argument must be non-negative");
- endif
-
- lx = length(x);
-
- if(lx >= l)
- y = x(1:l);
- else
- if(rows(x)>1)
- y = [ x; c*ones(l-lx,1) ];
- else
- y = [ x c*ones(1,l-lx) ];
- endif
- endif
-
- endfunction
-