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VRSQRT14SS

Computes the approximate reciprocal square root of a scalar single-precision floating-point value with a relative error of less than or equal to $2^{-14}$.

The following table describes the supported source and destination operands:

DO NOT support LOCK

This instruction is available only in 64-bit mode. It requires the AVX instruction set to be enabled.

The result is an approximation; it SHALL NOT be used for high-precision calculations without subsequent refinement (e.g., using Newton-Raphson iterations). The instruction DOES NOT support the LOCK prefix. If the input is a Signaling NaN, the instruction SHALL trigger #I. If the input is $\pm 0$ or $\pm \infty$, the result is $0$. If the input is a Quiet NaN, the result is a Quiet NaN.

The MXCSR register controls the rounding mode and exception handling. Inexact results SHALL trigger #P.