Problem with isinteger() - how to determine whether a constant is integer?

Hi, I have problem with isinteger() function. I wrote following function:

function [x] = f1(n)
b=ininteger(n);
end

This is a partial code. I want to accept integer n to function f1. Whenever user inputs integers, such as 3 or 4, b = 0 as Matlab treats constants as double. I tried converting n to int8(), but then floating value also gets converted to integer. How to test whether input constant is an integer or not? Thanks.

Answer 1

[José-Luis]

 a == floor(a)

Answer 2

[Prasanta Saikia]

rem(a)==0

[Walter Roberson]

rem(a, 1)

rem needs two arguments