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a0e8b64f5c
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Three things in this commit: 1. Integer / is now truncate-toward-zero on ints, IEEE on floats. The eval-op handler for '/' checks (number? + (= (round x) x)) on both sides; if both integral, applies host floor/ceil based on sign; otherwise falls through to host '/'. 2. Fixes Int.rem, which was returning 0 because (a - b * (a / b)) was using float division: 17 - 5 * 3.4 = 0.0. Now Int.rem 17 5 = 2. 3. Int module fleshed out: max_int / min_int / zero / one / minus_one, succ / pred / neg, add / sub / mul / div / rem, equal, compare. Also adds globals: max_int, min_int, abs_float, float_of_int, int_of_float (the latter two are identity in our dynamic runtime). 17 / 5 = 3 -17 / 5 = -3 (trunc toward zero) Int.rem 17 5 = 2 Int.compare 5 3 = 1