__lasx_xvfsub_d
LASX intrinsic · group: Floating Point Computation
Synopsis
__m256d __lasx_xvfsub_d (__m256d a, __m256d b)
#include <lasxintrin.h>
Instruction: xvfsub.d xr, xr, xr
CPU Flags: LASX
Description
Subtract corresponding double precision floating point elements in b from elements in a.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = a.fp64[i] - b.fp64[i];
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 5 | 2 |
| 3A6000 | LA664 | 3 | 4 |
| 3C6000 | LA664 | 3 | 4 |