_mm256_abs_epi64ADD TO COMPARE ADDED TO COMPARE
Intel 64-bit (64 bits)/ AVX512
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Purpose:
Compute the absolute value of packed signed 64-bit integers in a, and store the unsigned results in output.
Result:
A 256-bit vector of 4 x 64-bit signed integers that hold the absolute values of the input elements.
Example:
#include <immintrin.h>
#include <stdio.h>
int main() {
__m256i a = _mm256_set_epi64x(-1, 2, -3, 4);
__m256i d = _mm256_abs_epi64(a);
int64_t result_data[4];
_mm256_storeu_si256((__m256i*)result_data, d);
printf("%lld %lld %lld %lld\n", result_data[0], result_data[1], result_data[2], result_data[3]);
return 0;
}Prototypes
Assembly Instruction:
vpabsq
Usage:
__m256i result =
_mm256_abs_epi64(
__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 |