code: func (a *Assertions) Greaterf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
  	if h, ok := a.t.(tHelper); ok {
  		h.Helper()
  	}
  	return Greaterf(a.t, e1, e2, msg, args...)
  }
docs: // Greaterf asserts that the first element is greater than the second
  //
  //    a.Greaterf(2, 1, "error message %s", "formatted")
  //    a.Greaterf(float64(2, "error message %s", "formatted"), float64(1))
  //    a.Greaterf("b", "a", "error message %s", "formatted")