LibTest/math/sin_A01_t02.dart

// 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.

// @dart = 2.9

/// @assertion double sin(num radians)
/// Converts [radians] to a double and returns the sine of the value.
/// @description Checks result when argument ranges from 1E-52 to 1E-16.
/// @author msyabro
/// @reviewer pagolubev
/// @needsreview Why exact equality?


import "dart:math" as Math;
import "../../Utils/expect.dart";

main() {
  Expect.equals(.0, Math.sin(0.0));
  Expect.equals(.0, Math.sin(-0.0));
  
  for (double x = 1e-52; x < 1e-16; x *= 10) {
    Expect.equals(x, Math.sin(x));
    Expect.equals(-x, Math.sin(-x));
  }
}