Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.4)
// Compass (v1.0.0.alpha.18)
// ----

$a: 2;
$b: 4.345;

@function is-int($n){
  @if type-of($n) == number {
    @return $n - floor($n) == 0;
  }
  @return false;
}

test{
  test1: type-of($a);
  test2: type-of($b);
  test3: is-int($a);
  test4: is-int($b);
  test5: is-int('s');
}

SassMeister-output.css

test {
  test1: number;
  test2: number;
  test3: true;
  test4: false;
  test5: false;
}