Comparing lengths and angles

The Accuracy class provides methods for comparing lengths and angles.

The CompareLengths method takes two arguments, lengthA and lengthB, and returns an integer result:

• -1 lengthA is less than lengthB.
• 0 lengthA is equal to lengthB to within linear resolution.
• +1 lengthA is greater than lengthB.

This method provides general comparison of two lengths, but for common situations, such as comparing with zero, or testing whether two values are equal, simpler and more readable methods can be used:

public static void Example(double lengthA, double lengthB) {
	// same as CompareLengths(lengthA, lengthB) == 0
	bool equalLengths = Accuracy.EqualLengths(lengthA, lengthB);

	// same as CompareLengths(lengthA, 0) == 0
	bool lengthIsZero = Accuracy.LengthIsZero(lengthA);

	// same as CompareLengths(lengthA, 0) > 0
	bool lengthIsPositive = Accuracy.LengthIsPositive(lengthA);

	// same as CompareLengths(lengthA, 0) < 0
	bool lengthIsNegative = Accuracy.LengthIsNegative(lengthA);
}

Corresponding methods are provided for angles: CompareAngles, EqualAngles, AngleIsZero, AngleIsPositive, and AngleIsNegative.