The feval function executes a function using its name.
The syntax of feval is
[y1,y2,...,yn] = feval(fname,x1,x2,...,xm)
where fname is the name of the function to evaluate, and
xi are the arguments to the function, and yi are the
return values.
Here is an example of using feval to call the cos
function indirectly.
--> feval('cos',pi/4)
ans =
<double> - size: [1 1]
0.707106781186548