_mm_rsqrt_ph
Classification
AVX-512, Elementary Math Functions, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VRSQRTPH xmm, xmm
Synopsis
 _mm_rsqrt_ph(__m128h a);
Description
Compute the approximate reciprocal square root of packed half-precision (16-bit) floating-point elements in "a", and store the results in "dst". The maximum relative error for this approximation is less than 1.5*2^-12.
Operation
FOR i := 0 to 7
	dst.fp16[i] := (1.0 / SQRT(a.fp16[i]))
ENDFOR
dst[MAX:128] := 0