_mm_max_round_sh
Classification
AVX-512, Special Math Functions, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VMAXSH xmm, xmm, xmm {sae}
Synopsis
 _mm_max_round_sh(__m128h a, __m128h b, int sae);
Description
Compare the lower half-precision (16-bit) floating-point elements in "a" and "b", store the maximum value in the lower element of "dst", and copy the upper 7 packed elements from "a" to the upper elements of "dst". [sae_note][max_float_note]
Operation
dst.fp16[0] := (a.fp16[0] > b.fp16[0] ? a.fp16[0] : b.fp16[0])
dst[127:16] := a[127:16]
dst[MAX:128] := 0