Math.ReciprocalSqrtEstimate(Double) Method
Definition
Important
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Returns an estimate of the reciprocal square root of a specified number.
public:
static double ReciprocalSqrtEstimate(double d);
public static double ReciprocalSqrtEstimate (double d);
static member ReciprocalSqrtEstimate : double -> double
Public Shared Function ReciprocalSqrtEstimate (d As Double) As Double
Parameters
- d
- Double
The number whose reciprocal square root is to be estimated.
Returns
An estimate of the reciprocal square root d
.
Remarks
On ARM64 hardware this may use the FRSQRTE
instruction which performs a single Newton-Raphson iteration.
On hardware without specialized support, this may just return 1.0 / Sqrt(d)
.
Applies to
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