| // 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 E reduce(E combine(E value, E element)) |
| /// Reduces a collection to a single value by iteratively combining elements of |
| /// the collection using the provided function. |
| /// ... |
| /// If it has only one element, that element is returned. |
| /// @description Checks that the returned value is correct. |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Int32x4 i32x4p(n) => new Int32x4(n, n + 1, n + 2, n + 3); |
| |
| equal(o1, o2) => o1.x == o2.x && o1.y == o2.y && o1.z == o2.z && o1.w == o2.w; |
| |
| void check(list, expected) { |
| var l = new Int32x4List.fromList(list); |
| var res = l.reduce((prev, cur) => prev + cur); |
| Expect.isTrue(equal(expected, res)); |
| } |
| |
| void checkConst(list, expected) { |
| var l = new Int32x4List.fromList(list); |
| var res = l.reduce((prev, cur) => i32x4p(1)); |
| Expect.isTrue(equal(expected, res)); |
| } |
| |
| main() { |
| check([i32x4p(1)], i32x4p(1)); |
| check([i32x4p(1), i32x4p(5), i32x4p(9), i32x4p(13)], |
| new Int32x4(28, 32, 36, 40)); |
| |
| checkConst([i32x4p(2)], i32x4p(2)); |
| checkConst([i32x4p(1), i32x4p(5), i32x4p(9), i32x4p(13)], i32x4p(1)); |
| } |