| // Copyright (c) 2017, 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. |
| |
| /// @assertion double acos(num x) |
| /// Converts x to a double and returns its arc cosine in radians. |
| /// @description Checks that an argument of acos should be number (a decimal |
| /// or hexadecimal integer, or a decimal double). |
| /// @author ngl@unipro.ru |
| |
| import "dart:math" as Math; |
| import "../../Utils/expect.dart"; |
| |
| main() { |
| var a1 = Math.acos(0); |
| var a2 = Math.acos(0x0000); |
| var a3 = Math.acos(0.0); |
| Expect.equals(a1, a2); |
| Expect.equals(a1, a3); |
| } |