Math.FusedMultiplyAdd(Double, Double, Double) Method

Definition

Namespace:

System

Assemblies:

netstandard.dll, System.Runtime.dll

Source:

Math.cs

Returns (x * y) + z, rounded as one ternary operation.

C#

public static double FusedMultiplyAdd(double x, double y, double z);

Parameters

x

Double

The number to be multiplied with y.

y

Double

The number to be multiplied with x.

z

Double

The number to be added to the result of x multiplied by y.

Returns

Double

(x * y) + z, rounded as one ternary operation.

Remarks

This computes (x * y) as if to infinite precision, adds z to that result as if to infinite precision, and finally rounds to the nearest representable value.

This differs from the non-fused sequence which would compute (x * y) as if to infinite precision, round the result to the nearest representable value, add z to the rounded result as if to infinite precision, and finally round to the nearest representable value.

Applies to