%SGN Sign % SGN(X) returns 1 if X is greater or equal to zero, and -1 if less % than zero. % % Syntax: Y = sgn(X) % % Inputs: % X - Real number % % Outputs: % Y - 1 if X is greater or equal to zero, and -1 if less than zero. % % See also: SIGN % Author: Travis Hydzik % Last revision: 20 October 2004 function Y = sgn(X) Y = sign(sign(X) + 0.5);