1  #include <immintrin.h>
 2  #ifdef _MSC_VER
 3      #include <ammintrin.h>
 4  #else
 5      #include <x86intrin.h>
 6  #endif
 7  
 8  int main(int argc, char **argv)
 9  {
10      __m256 a = _mm256_loadu_ps((const float*)argv[argc-1]);
11             a = _mm256_macc_ps(a, a, a);
12      return (int)_mm_cvtss_f32(_mm256_castps256_ps128(a));
13  }