which

Gives a brief description on the origin of a function.

Syntax

which('A')

Inputs

A
Function name.
Type: char | string
Dimension: string

Outputs

This function returns no values.

Examples

Simple which example:
which('sqrt')
'sqrt' is a built-in function
If a variable you made matches a built-in function, which still indicates that the given variable is a built-in function:
sqrt = 5
which('sqrt')
'sqrt' is a built-in function
User-defined function example:
function z=sqrt(a)
z=a/2;
end

which('sqrt')
'sqrt' is a user function