__lasx_xvfrsqrt_d
LASX intrinsic · group: Floating Point Computation
Synopsis
__m256d __lasx_xvfrsqrt_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrsqrt.d xr, xr
CPU Flags: LASX
Description
Compute reciprocal of square root of double precision floating point elements in a.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = 1.0 / sqrt(a.fp64[i]);
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 15 | 0.04(1/27.5) |
| 3A6000 | LA664 | 15 | 0.04(1/26.5) |
| 3C6000 | LA664 | 15 | 0.04(1/26) |