| // 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 asin(num x) |

| /// Returns a value in the range -PI/2..PI/2, or NaN if [x] is outside the range |

| /// @description Checks returned values are in the range -PI/2..PI/2, if an |

| /// argument is in the range -1..1. |

| /// @reviewer ngl@unipro.ru |

| import "dart:math" as Math; |

| import "../../Utils/expect.dart"; |

| for (var d = -1.0; d <= 1.0; d += 0.5) { |

| Expect.isTrue(a >= -Math.pi / 2); |

| Expect.isTrue(a <= Math.pi / 2); |