Math.ReciprocalEstimate(Double) Method

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

Math.cs

Returns an estimate of the reciprocal of a specified number.

public:
 static double ReciprocalEstimate(double d);

public static double ReciprocalEstimate (double d);

static member ReciprocalEstimate : double -> double

Public Shared Function ReciprocalEstimate (d As Double) As Double

Parameters

d

Double

The number whose reciprocal is to be estimated.

Returns

Double

An estimate of the reciprocal of d.

Remarks

On ARM64 hardware this may use the FRECPE instruction which performs a single Newton-Raphson iteration.

On hardware without specialized support, this may just return 1.0 / d.