feval - Evaluate function
Syntax
[y1, y2, ...] = feval(fhandle, x1,
..., xn)
[y1, y2, ...] = feval(function, x1,
..., xn)
Description
[y1, y2, ...] = feval(fhandle, x1,
..., xn) evaluates the function handle, fhandle,
using arguments x1 through xn.
If the function handle is bound to more than one built-in or M-file,
(that is, it represents a set of overloaded functions), then the data
type of the arguments x1 through xn determines
which function is dispatched to.
Note
It is not necessary to use feval to call
a function by means of a function handle. This is explained in Calling a Function Using Its Handle in the MATLAB Programming
Fundamentals documentation. |
[y1, y2, ...] = feval(function, x1,
..., xn). If function is a quoted string
containing the name of a function (usually defined by an M-file),
then feval(function, x1, ..., xn) evaluates that
function at the given arguments. The function parameter
must be a simple function name; it cannot contain path information.
Remarks
The following two statements are equivalent.
[V,D] = eig(A)
[V,D] = feval(@eig, A)
Nested functions are not accessible to feval.
To call a nested function, you must either call it directly by name,
or construct a function handle for it using the @ operator.
Examples
The following example passes a function handle, fhandle,
in a call to fminbnd. The fhandle argument
is a handle to the humps function.
fhandle = @humps;
x = fminbnd(fhandle, 0.3, 1);
The fminbnd function uses feval to
evaluate the function handle that was passed in.
function [xf, fval, exitflag, output] = ...
fminbnd(funfcn, ax, bx, options, varargin)
.
.
.
fx = feval(funfcn, x, varargin{:});See Also
assignin, function_handle, functions, builtin, eval, evalin
 | ferror | | Feval (COM) |  |
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