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 // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. // VMOptions=--no_background_compilation --optimization_counter_threshold=10 import "package:expect/expect.dart"; // Tests for long multiplication under // 64-bit arithmetic wrap-around semantics. final int maxInt32 = 2147483647; final int minInt32 = -2147483648; final int maxInt64 = 0x7fffffffffffffff; final int minInt64 = 0x8000000000000000; int mul(int x, int y) { return x * y; } doConstants() { Expect.equals(0, mul(0, 0)); Expect.equals(0, mul(0, 7)); Expect.equals(0, mul(7, 0)); Expect.equals(1, mul(1, 1)); Expect.equals(7, mul(1, 7)); Expect.equals(7, mul(7, 1)); Expect.equals(21, mul(7, 3)); Expect.equals(21, mul(3, 7)); Expect.equals(21 << 32, mul(3 << 32, 7)); Expect.equals(21 << 32, mul(3, 7 << 32)); Expect.equals(0, mul(3 << 32, 7 << 32)); Expect.equals(0, mul(0, maxInt32)); Expect.equals(0, mul(maxInt32, 0)); Expect.equals(maxInt32, mul(1, maxInt32)); Expect.equals(maxInt32, mul(maxInt32, 1)); Expect.equals(maxInt32 + maxInt32, mul(2, maxInt32)); Expect.equals(0, mul(0, maxInt64)); Expect.equals(0, mul(maxInt64, 0)); Expect.equals(maxInt64, mul(1, maxInt64)); Expect.equals(maxInt64, mul(maxInt64, 1)); Expect.equals(-2, mul(2, maxInt64)); Expect.equals(0, mul(0, minInt32)); Expect.equals(0, mul(minInt32, 0)); Expect.equals(minInt32, mul(1, minInt32)); Expect.equals(minInt32, mul(minInt32, 1)); Expect.equals(minInt32 + minInt32, mul(2, minInt32)); Expect.equals(0, mul(0, minInt64)); Expect.equals(0, mul(minInt64, 0)); Expect.equals(minInt64, mul(1, minInt64)); Expect.equals(minInt64, mul(minInt64, 1)); Expect.equals(0, mul(2, minInt64)); Expect.equals(4611686014132420609, mul(maxInt32, maxInt32)); Expect.equals(-4611686016279904256, mul(maxInt32, minInt32)); Expect.equals(9223372034707292161, mul(maxInt32, maxInt64)); Expect.equals(minInt64, mul(maxInt32, minInt64)); Expect.equals(-4611686016279904256, mul(minInt32, maxInt32)); Expect.equals(4611686018427387904, mul(minInt32, minInt32)); Expect.equals(2147483648, mul(minInt32, maxInt64)); Expect.equals(0, mul(minInt32, minInt64)); Expect.equals(9223372034707292161, mul(maxInt64, maxInt32)); Expect.equals(2147483648, mul(maxInt64, minInt32)); Expect.equals(1, mul(maxInt64, maxInt64)); Expect.equals(minInt64, mul(maxInt64, minInt64)); Expect.equals(minInt64, mul(minInt64, maxInt32)); Expect.equals(0, mul(minInt64, minInt32)); Expect.equals(minInt64, mul(minInt64, maxInt64)); Expect.equals(0, mul(minInt64, minInt64)); } doVars(int v) { int e = v; for (int i = 1; i < 256; i++) { Expect.equals(e, mul(i, v)); Expect.equals(e, mul(v, i)); e += v; } } main() { // Repeat tests to enter JIT (when applicable). for (int i = 0; i < 20; i++) { doConstants(); doVars(1); doVars(maxInt32); doVars(minInt32); doVars(7 << 32); doVars(-(7 << 32)); doVars(maxInt64); doVars(minInt64); } }