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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 // Test correct usage of inlined double temporary objects. | |
| 5 | |
| 6 main() { | |
| 7 for (int i = 0; i < 2000; i++) { | |
| 8 testBinaryOp(); | |
| 9 testUnaryOp(); | |
| 10 } | |
| 11 } | |
| 12 | |
| 13 | |
| 14 // VM: temporary double should not be used as result of division, | |
| 15 // otherwise the function always returns the same object. | |
| 16 double divide(double a, double b) { | |
| 17 return a / b; | |
| 18 } | |
| 19 | |
| 20 testBinaryOp() { | |
| 21 var x = divide(1.0, 2.0); | |
| 22 var y = divide(2.0, 3.0); | |
| 23 Expect.notEquals(x, y); | |
| 24 } | |
| 25 | |
| 26 | |
| 27 // VM: temporary double should be used only for "-b", otherwise the | |
| 28 // function would always return the same object. | |
| 29 double unary(double a, double b) { | |
| 30 return -(a * (-b)); | |
| 31 } | |
| 32 | |
| 33 | |
| 34 testUnaryOp() { | |
| 35 var x = unary(1.0, 2.0); | |
| 36 var y = unary(3.0, 4.0); | |
| 37 Expect.equals(2.0, x); | |
| 38 } | |
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