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 // Copyright (c) 2013, 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. // Test canonicalization of simple arithmetic equivalences. // VMOptions=--optimization-counter-threshold=20 --no-use-osr --no-background-compilation import "package:expect/expect.dart"; main() { for (var i = 0; i < 50; i++) { Expect.isTrue(mul1double(i) is double); Expect.equals(i.toDouble(), mul1double(i)); Expect.equals(0.0, mul0double(i)); Expect.equals(i.toDouble(), add0double(i)); Expect.equals(i, mul1int(i)); Expect.equals(i, add0int(i)); Expect.equals(0, mul0int(i)); Expect.equals(0, and0(i)); Expect.equals(i, and1(i)); Expect.equals(i, or0(i)); Expect.equals(i, xor0(i)); } Expect.isTrue(mul0double(double.nan).isNaN); Expect.isFalse(add0double(-0.0).isNegative); } mul1double(x) => 1.0 * x; mul0double(x) => 0.0 * x; add0double(x) => 0.0 + x; mul1int(x) => 1 * x; mul0int(x) => 0 * x; add0int(x) => 0 + x; and0(x) => 0 & x; or0(x) => 0 | x; xor0(x) => 0 ^ x; and1(x) => (-1) & x;