packages/newton/lib/src/utils.dart - mirrors/flutter - Git at Google

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 bool nearEqual(double a, double b, double epsilon) =>
     (a > (b - epsilon)) && (a < (b + epsilon));

 bool nearZero(double a, double epsilon) => nearEqual(a, 0.0, epsilon);
	// Copyright 2016 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	bool nearEqual(double a, double b, double epsilon) =>
	(a > (b - epsilon)) && (a < (b + epsilon));

	bool nearZero(double a, double epsilon) => nearEqual(a, 0.0, epsilon);