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VRCP28PS

Computes an approximation of the reciprocal of the four single-precision floating-point values in the source operand and stores the results in the destination operand. The approximation is accurate to within 2^-28.

The table after the description covers what the source and destinations can be.

DO NOT support LOCK

This instruction is only available when the CPU supports the SSE4.1 instruction set. It operates on XMM registers and is supported in both 32-bit and 64-bit modes.

The result of VRCP28PS is an approximation and NOT a precise reciprocal. To obtain a higher precision result, it SHALL be used in conjunction with the VRCP14PS instruction or a Newton-Raphson iteration. If the input is $\pm 0$, the result is $\pm \infty$; if the input is $\pm \infty$, the result is $\pm 0$; if the input is NaN, the result is NaN. This instruction does NOT trigger floating-point exceptions such as #Z, #D, #O, #U, or #P.