blob: 6658857dc8d865fd579d4dbd709b94dcbde2c5c9 [file] [log] [blame]
// 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 atan2(num a, num b)
/// If [b] is positive, this is the same as atan(b/a).
/// @description Checks that if [b] is positive, the result equals
/// atan([a]/[b]).
/// @author msyabro
import "dart:math" as Math;
import "../../Utils/expect.dart";
check(num a, num b) {
Expect.equals(Math.atan(a / b), Math.atan2(a, b));
main() {
check(1, 1);
check(-0.2, 1);
check(2.0, .0);
check(.0, 1e20);
check(double.negativeInfinity, 0);
check(double.infinity, 0);