__lasx_xvfmax_d
LASX intrinsic · group: Floating Point Computation
Synopsis
__m256d __lasx_xvfmax_d (__m256d a, __m256d b)
#include <lasxintrin.h>
Instruction: xvfmax.d xr, xr, xr
CPU Flags: LASX
Description
Compute the maximum (maxNum) of double precision floating point elements in a and b.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = fmax(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 |