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kotlinlang

in other words, they come in pairs; mod &amp; floorDiv are not from the same pair

for all x and non-zero y,
x == x / y * y + x % y (aka x == x.div(y) * y + x.rem(y))
x == floorDiv(x, y) * y + floorMod(x, y)

<@U10EJRH2L> I was referring to java.lang.Math.floorMod&amp;floorDiv. I haven't checked if Kotlin's new operators line up with those.

looks like they do, although the naming is unfortunate

IMO everything should have been named div/mod and quot/rem from the start, but it's too late now

if you're working on positive numbers only, then none of it matters, both sets of operators have the same result :slightly_smiling_face:

the difference is that Java's (and Kotlin's) x % y keeps the sign of x, while floorMod(x, y) keeps the sign of y. the result of x / y and floorDiv(x, y) are consistent with that to maintain the previous invariant