_mm_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 128-bit vector of 2 x 64-bit signed integers that hold the absolute values of the input elements.
Example:
#include <immintrin.h>
#include <stdio.h>
int main() {
__m128i a = _mm_set_epi64x(-2, 1);
__m128i d = _mm_abs_epi64(a);
int64_t result_data[2];
_mm_storeu_si128((__m128i*)result_data, d);
printf("%lld %lld\n", result_data[0], result_data[1]);
return 0;
}Prototypes
Assembly Instruction:
vpabsq
Usage:
__m128i result =
_mm_abs_epi64(
__m128i 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 |