MathF.FusedMultiplyAdd(Single, Single, Single) Method

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

MathF.cs

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

public:
 static float FusedMultiplyAdd(float x, float y, float z);

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

static member FusedMultiplyAdd : single * single * single -> single

Public Shared Function FusedMultiplyAdd (x As Single, y As Single, z As Single) As Single

Parameters

x

Single

The number to be multiplied with y.

y

Single

The number to be multiplied with x.

z

Single

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

Returns

Single

(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 preicision, 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.