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 -> doublePublic Shared Function ReciprocalSqrtEstimate (d As Double) As DoubleParameters
- 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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