dgrove@google.com
4bc64b8c2b
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7 260f80e4-7a28-3924-810f-c04153c831b5
29 lines
1001 B
Dart
29 lines
1001 B
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// TODO(jacobr): pick a better name. This was goog.math in Closure.
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/**
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* Math utility functions originally from the closure Math library.
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*/
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class GoogleMath {
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/**
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* Takes a [value] and clamps it to within the bounds specified by
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* [min] and [max].
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*/
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static num clamp(num value, num min, num max) {
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return Math.min(Math.max(value, min), max);
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}
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/**
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* Tests whether the two values are equal to each other, within a certain
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* tolerance to adjust for floating point errors.
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* The optional [tolerance] value d Defaults to 0.000001. If specified,
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* it should be greater than 0.
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* Returns whether [a] and [b] are nearly equal.
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*/
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static bool nearlyEquals(num a, num b, [num tolerance = 0.000001]) {
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return (a - b).abs() <= tolerance;
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}
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}
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