end
end
+ # Compare float numbers with a given precision.
+ #
+ # Because of the loss of precision in floating numbers,
+ # the `==` method is often not the best way to compare them.
+ #
+ # ~~~
+ # assert 0.01.is_approx(0.02, 0.1) == true
+ # assert 0.01.is_approx(0.02, 0.001) == false
+ # ~~~
+ fun is_approx(other, precision: Float): Bool
+ do
+ assert precision >= 0.0
+ return self <= other + precision and self >= other - precision
+ end
+
redef fun max(other)
do
if self < other then
redef fun -(i) is intern
redef fun *(i) is intern
redef fun /(i) is intern
+
+ # Modulo of `self` with `i`.
+ #
+ # Finds the remainder of division of `self` by `i`.
+ #
+ # assert 5 % 2 == 1
+ # assert 10 % 2 == 0
fun %(i: Int): Int is intern
redef fun zero do return 0