__lsx_vmod_du
LSX intrinsic · group: Integer Computation
Synopsis
__m128i __lsx_vmod_du (__m128i a, __m128i b)
#include <lsxintrin.h>
Instruction: vmod.du vr, vr, vr
CPU Flags: LSX
Description
Compute the remainder of each unsigned 64-bit element in a divided by the corresponding element in b.
Operation
for (int i = 0; i < 2; i++) {
dst.dword[i] = (b.dword[i] == 0) ? 0 : ((u64)a.dword[i] % (u64)b.dword[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 8, 10 | 0.11(1/9.5) |
| 3A6000 | LA664 | 8, 10 | 0.25(1/4) |
| 3C6000 | LA664 | 8 | 0.33(1/3) |
| 2K1000LA | LA264 | 9, 11 | 0.08(1/13) |
| 2K3000 | LA364E | 9, 11 | 0.08(1/13) |