%LOGICAL Convert numeric values to logical.
%   LOGICAL(X) returns an array that can be used for logical indexing
%   or logical tests.  Logical arrays are also created by the
%   relational operators (==,<,>,~, etc.) and functions like ANY, ALL,
%   ISNAN, ISINF, and ISFINITE.
%
%   A(B), where B is a logical array, returns the values of A at the
%   indices where the real part of B is nonzero (B must be the 
%   same size as A).  A(B) is the same as A(FIND(B)).
%
%   Most arithmetic operations remove the logicalness from an array.
%   For example, adding zero to a logical array removes its logical
%   characteristic.  A = +A is the easiest way to convert a logical
%   double array, A, to a strictly numeric double array.
%
%   See also ISLOGICAL, RELOP, OPS.

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 1.14 $  $Date: 2000/08/01 20:09:57 $
%   Built-in function.
