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_mm_abs_epi16
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 Intel 64-bit (64 bits)/ SSE4.2  View official documentation
 Location: Arithmetic  >  Vector Absolute Value
 CPU Extensions: SSSE3
Purpose:
Compute the absolute value of packed signed 16-bit integers in a, and store the unsigned results in output.
Result:

A 128-bit vector of 8 x 16-bit signed integers that hold the absolute values of the input elements.

Example:
#include <tmmintrin.h>
#include <stdio.h>
int main() {
 int16_t a_data[8] = {
  -10, 20, -30, 40, -50, 60, -70, 80
 };
 __m128i a = _mm_loadu_si128((__m128i*)a_data);
 __m128i result = _mm_abs_epi16(a);
 int16_t result_data[8];
 _mm_storeu_si128((__m128i*)result_data, result);
 for (int i = 0; i < 8; ++i) {
   printf("%d ", result_data[i]);
  }
  printf("\n");

  return 0;
 }

Prototypes

Assembly Instruction:
pabsw
Usage:
__m128i result = _mm_abs_epi16( __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