_mm256_abs_epi32ADD TO COMPARE ADDED TO COMPARE
Intel 64-bit (64 bits)/ AVX2
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Purpose:
Compute the absolute value of packed signed 32-bit integers in a, and store the unsigned results in output.
Result:
A 256-bit vector of 8 x 32-bit signed integers that hold the absolute values of the input elements.
Example:
#include <immintrin.h>
#include <stdio.h>
int main() {
int32_t data[8] = {
-1, 2, -3, 4, -5, 6, -7, 8
};
__m256i a = _mm256_loadu_si256((__m256i*)data);
__m256i result = _mm256_abs_epi32(a);
int32_t result_data[8];
_mm256_storeu_si256((__m256i*)result_data, result);
for (int i = 0; i < 8; ++i) {
printf("%d ", result_data[i]);
}
printf("\n");
return 0;
}Prototypes
Assembly Instruction:
vpabsd
Usage:
__m256i result =
_mm256_abs_epi32(
__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 |