__lasx_xvfrsqrt_s
LASX intrinsic · group: Floating Point Computation
Synopsis
__m256 __lasx_xvfrsqrt_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrsqrt.s xr, xr
CPU Flags: LASX
Description
Compute reciprocal of square root of single precision floating point elements in a.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = 1.0 / sqrt(a.fp32[i]);
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 25 | 0.03(1/32) |
| 3A6000 | LA664 | 25 | 0.05(1/19) |
| 3C6000 | LA664 | 21 | 0.11(1/9.5) |