_mm_hadd_epi32
Visual Studio 2008
Microsoft Specific
Emits the Supplemental Streaming SIMD Extensions 3 (SSSE3) instruction phaddd. This instruction adds the elements of two 128-bit parameters.
__m128i _mm_hadd_epi32( __m128i a, __m128i b );
#include <stdio.h>
#include <tmmintrin.h>
int main ()
{
__m128i a, b;
a.m128i_i32[0] = -1;
a.m128i_i32[1] = 1;
a.m128i_i32[2] = 0;
a.m128i_i32[3] = 65535;
b.m128i_i32[0] = -65535;
b.m128i_i32[1] = 0;
b.m128i_i32[2] = 128;
b.m128i_i32[3] = -32;
__m128i res = _mm_hadd_epi32(a, b);
printf_s("Original a: %8d\t%8d\t%8d\t%8d\nOriginal b: %8d\t%8d\t%8d\t%8d\n",
a.m128i_i32[0], a.m128i_i32[1], a.m128i_i32[2], a.m128i_i32[3],
b.m128i_i32[0], b.m128i_i32[1], b.m128i_i32[2], b.m128i_i32[3]);
printf_s("Result res: %8d\t%8d\t%8d\t%8d\n",
res.m128i_i32[0], res.m128i_i32[1], res.m128i_i32[2], res.m128i_i32[3]);
return 0;
}
Original a: -1 1 0 65535 Original b: -65535 0 128 -32 Result res: 0 65535 -65535 96
