_mm256_abs_epi16ADD TO COMPARE ADDED TO COMPARE
Intel 64-bit (64 bits)/ AVX2
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Purpose:
Compute the absolute value of packed signed 16-bit integers in a, and store the unsigned results in output.
Result:
A 256-bit vector of 16 x 16-bit signed integers that hold the absolute values of the input elements.
Example:
#include <immintrin.h>
#include <stdio.h>
int main() {
int16_t a_data[16] = {
-10, 20, -30, 40, -50, 60, -70, 80, -90, 100, -110, 120, -130, 140, -150, 160
};
__m256i a = _mm256_setr_epi16( a_data[0], a_data[1], a_data[2], a_data[3], a_data[4], a_data[5], a_data[6], a_data[7], a_data[8], a_data[9], a_data[10], a_data[11], a_data[12], a_data[13], a_data[14], a_data[15] );
__m256i result = _mm256_abs_epi16(a);
int16_t result_data[16];
_mm256_storeu_si256((__m256i*)result_data, result);
for (int i = 0; i < 16; ++i) {
printf("%d ", result_data[i]);
}
printf("\n");
return 0;
}Prototypes
Assembly Instruction:
vpabsw
Usage:
__m256i result =
_mm256_abs_epi16(
__m256i a
)
Performance Metrics:
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SIMD Intrinsics Summary
| SIMD Engines: | 6 |
| C Intrinsics: | 10444 |
| NEON: | 4353 |
| AVX2: | 405 |
| AVX512: | 4717 |
| SSE4.2: | 598 |
| VSX: | 192 |
| IBM-Z: | 179 |