Floating Point Misc
__m256i __lasx_xvfclass_d (__m256d a)
Synopsis
__m256i __lasx_xvfclass_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfclass.d xr, xr
CPU Flags: LASX
Description
Classifiy each double precision floating point elements in a.
Operation
for (int i = 0; i < 4; i++) {
dst.dword[i] = fp_classify(a.fp64[i]);
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 2 | 2 |
| 3A6000 | LA664 | 2 | 4 |
| 3C6000 | LA664 | 2 | 4 |
__m256i __lasx_xvfclass_s (__m256 a)
Synopsis
__m256i __lasx_xvfclass_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfclass.s xr, xr
CPU Flags: LASX
Description
Classifiy each single precision floating point elements in a.
Operation
for (int i = 0; i < 2; i++) {
dst.word[i] = fp_classify(a.fp32[i]);
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 2 | 2 |
| 3A6000 | LA664 | 2 | 4 |
| 3C6000 | LA664 | 2 | 4 |
__m256 __lasx_xvfrint_s (__m256 a)
Synopsis
__m256 __lasx_xvfrint_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrint.s xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, using current rounding mode specified in fscr, and store as floating point numbers.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = (fp32)(s32)a.fp32[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256d __lasx_xvfrint_d (__m256d a)
Synopsis
__m256d __lasx_xvfrint_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrint.d xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, using current rounding mode specified in fscr, and store as floating point numbers.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = (fp64)(s64)a.fp64[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256 __lasx_xvfrintrp_s (__m256 a)
Synopsis
__m256 __lasx_xvfrintrp_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrintrp.s xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards positive infinity, and store as floating point numbers.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = (fp32)(s32)a.fp32[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256d __lasx_xvfrintrp_d (__m256d a)
Synopsis
__m256d __lasx_xvfrintrp_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrintrp.d xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards positive infinity, and store as floating point numbers.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = (fp64)(s64)a.fp64[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256 __lasx_xvfrintrm_s (__m256 a)
Synopsis
__m256 __lasx_xvfrintrm_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrintrm.s xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards negative infinity, and store as floating point numbers.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = (fp32)(s32)a.fp32[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256d __lasx_xvfrintrm_d (__m256d a)
Synopsis
__m256d __lasx_xvfrintrm_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrintrm.d xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards negative infinity, and store as floating point numbers.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = (fp64)(s64)a.fp64[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256 __lasx_xvfrintrz_s (__m256 a)
Synopsis
__m256 __lasx_xvfrintrz_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrintrz.s xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards zero, and store as floating point numbers.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = (fp32)(s32)a.fp32[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256d __lasx_xvfrintrz_d (__m256d a)
Synopsis
__m256d __lasx_xvfrintrz_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrintrz.d xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards zero, and store as floating point numbers.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = (fp64)(s64)a.fp64[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256 __lasx_xvfrintrne_s (__m256 a)
Synopsis
__m256 __lasx_xvfrintrne_s (__m256 a)
#include <lasxintrin.h>
Instruction: xvfrintrne.s xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards nearest even, and store as floating point numbers.
Operation
for (int i = 0; i < 8; i++) {
dst.fp32[i] = (fp32)(s32)a.fp32[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |
__m256d __lasx_xvfrintrne_d (__m256d a)
Synopsis
__m256d __lasx_xvfrintrne_d (__m256d a)
#include <lasxintrin.h>
Instruction: xvfrintrne.d xr, xr
CPU Flags: LASX
Description
Round single-precision floating point elements in a to integers, rounding towards nearest even, and store as floating point numbers.
Operation
for (int i = 0; i < 4; i++) {
dst.fp64[i] = (fp64)(s64)a.fp64[i]; // rounding mode is not expressed in C
}
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 4 | 2 |
| 3A6000 | LA664 | 4 | 2 |
| 3C6000 | LA664 | 4 | 2 |