__lasx_xvftintrz_w_s
LASX intrinsic · group: Floating Point Conversion
Synopsis
__m256i __lasx_xvftintrz_w_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvftintrz.w.s xr, xr
CPU Flags: LASX
Description
Convert single-precision floating point elements in a to signed 32-bit integer, rounding towards zero.
Operation
for (int i = 0; i < 8; i++) {
dst.word[i] = (s32)a.fp32[i]; // rounding mode is not expressed in C
}
// Expands to:
if (0) {
dst.word[0] = (s32)a.fp32[0];
dst.word[1] = (s32)a.fp32[1];
dst.word[2] = (s32)a.fp32[2];
dst.word[3] = (s32)a.fp32[3];
dst.word[4] = (s32)a.fp32[4];
dst.word[5] = (s32)a.fp32[5];
dst.word[6] = (s32)a.fp32[6];
dst.word[7] = (s32)a.fp32[7];
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 4 |
| 3C6000 | LA664 | 4 | 4 |