MATLAB Programming Fundamentals - MathWorks

Compare Function Handles

Compare Handles Constructed from Named Function

MATLAB® considers function handles that you construct from the same named function

to be equal. The isequal function returns a value of true when comparing these types of

handles.

fun1 = @sin;

fun2 = @sin;

isequal(fun1,fun2)

ans =

logical

1

If you save these handles to a MAT-file, and then load them back into the workspace, they

are still equal.

Compare Handles to Anonymous Functions

Unlike handles to named functions, function handles that represent the same anonymous

function are not equal. They are considered unequal because MATLAB cannot guarantee

that the frozen values of nonargument variables are the same. For example, in this case, A

is a nonargument variable.

A = 5;

h1 = @(x)A * x.^2;

h2 = @(x)A * x.^2;

isequal(h1,h2)

ans =

logical

0

If you make a copy of an anonymous function handle, the copy and the original are equal.

13 Function Handles