C# | Math.IEEERemainder() Method
In C#, IEEERemainder() is a Math class method which is used to return the remainder resulting from the division of a specified number by another specified number.
public static double IEEERemainder (double a, double b);
a: It is the dividend of type System.Double.
b: It is the divisor of type System.Double.
Return Type: This method returns a number equal to a – (b Q), where Q is the quotient of a / b rounded to the nearest integer of type System.Double.
- If a / b falls halfway between two integers, the even integer is returned.
- If a – (b Q) is zero, the value Positive Zero is returned if a is positive, or Negative Zero if a is negative.
- If b = 0, NaN is returned.
Difference Between IEEERemainder and Remainder Operator: Both are used to returns the remainder after division but the formulas they use are different. The formula for the IEEERemainder method is:
IEEERemainder = dividend - (divisor * Math.Round(dividend / divisor))
And the formula for the remainder operator is:
Remainder = (Math.Abs(dividend) - (Math.Abs(divisor) * (Math.Floor(Math.Abs(dividend) / Math.Abs(divisor))))) * Math.Sign(dividend)
IEEERemainder Remainder Operator 0 / 1 = 0 0 -4 / 8 = -4 -4 1 / 0 = NaN NaN -1 / 0 = NaN NaN 145 / 7 = -2 5 18.52 / 2 = 0.52 0.52 42.26 / 4.2 = 0.259999999999998 0.259999999999996