function shouldBe(actual, expected) { if (actual !== expected) throw new Error('bad value: ' + actual); } // ValueToInt32(DoubleRep) function toInt32(number) { return (number * 0.5) >> 0; } noInline(toInt32); for (var i = 0; i < 1e5; ++i) toInt32(i * 1.0); function test(number) { return toInt32(number * 2); } const INT32_MAX = 2147483647; const INT32_MIN = -2147483648; shouldBe(test(INT32_MAX - 1), INT32_MAX - 1); shouldBe(test(INT32_MAX - 0.5), INT32_MAX - 1); shouldBe(test(INT32_MAX), INT32_MAX); shouldBe(test(INT32_MAX + 0.5), INT32_MAX); shouldBe(test(INT32_MAX + 1), INT32_MIN); shouldBe(test(INT32_MIN - 1), INT32_MAX); shouldBe(test(INT32_MIN - 0.5), INT32_MIN); shouldBe(test(INT32_MIN), INT32_MIN); shouldBe(test(INT32_MIN + 0.5), INT32_MIN + 1); shouldBe(test(INT32_MIN + 1), INT32_MIN + 1); shouldBe(test(Number.EPSILON), 0); shouldBe(test(Number.NaN), 0); shouldBe(test(Number.POSITIVE_INFINITY), 0); shouldBe(test(Number.NEGATIVE_INFINITY), 0); shouldBe(test(Number.MAX_SAFE_INTEGER), -1); shouldBe(test(Number.MIN_SAFE_INTEGER), 1);