__lasx_xvfmina_d

LASX intrinsic · group: Floating Point Computation

Synopsis

__m256d __lasx_xvfmina_d (__m256d a, __m256d b)
#include <lasxintrin.h>
Instruction: xvfmina.d xr, xr, xr
CPU Flags: LASX

Description

Compute the minimum (minNumMag) of double precision floating point elements in a and b, selecting the element with the smaller absolute value.

Operation

for (int i = 0; i < 4; i++) {
  if (abs(a.fp64[i]) < abs(b.fp64[i])) {
    dst.fp64[i] = a.fp64[i];
  } else if (abs(b.fp64[i]) < abs(a.fp64[i])) {
    dst.fp64[i] = b.fp64[i];
  } else {
    dst.fp64[i] = fmin(a.fp64[i], b.fp64[i]);
  }
}

Tested on real machine.

Latency and Throughput

CPU	µarch	Latency	Throughput (IPC)
3C5000	LA464	2	2
3A6000	LA664	2	4
3C6000	LA664	2	4

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