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// Copyright (c) 2011, 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 atan(num x)
/// Converts [x] to a dobule and returns its arc tangent in radians.
/// @description Checks special values.
/// @author msyabro
import "dart:math" as Math;
import "../../Utils/expect.dart";
main() {
Expect.isTrue(Math.atan(double.infinity) == Math.pi / 2);
Expect.isTrue(Math.atan(double.negativeInfinity) == -Math.pi / 2);