__lasx_xvflogb_d
LASX intrinsic · group: Floating Point Computation
Synopsis
__m256d __lasx_xvflogb_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvflogb.d xr, xr
CPU Flags: LASX
Description
Compute base-2 logarithm of double precision floating point elements in a.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = log2(a.fp64[i]);
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 4 |
| 3C6000 | LA664 | 4 | 4 |