rsqrtps

RSQRTPS - Reciprocal SQuare RooT Packed Single

RSQRTPS xmm1, xmm2/m128 (S1
__m128 _mm_rsqrt_ps(__m128 a)
VRSQRTPS xmm1, xmm2/m128 (V1
__m128 _mm_rsqrt_ps(__m128 a)

For each float, calculate approximate reciprocal of square root of (1) and set the result to (2). (relative error <= 1.5*2^-12)

VRSQRTPS ymm1, ymm2/m256 (V1
__m256 _mm256_rsqrt_ps(__m256 a)

For each float, calculate approximate reciprocal of square root of (1) and set the result to (2). (relative error <= 1.5*2^-12)

512-bit → VRSQRT14PS / VRSQRT28PS