C++ (Cpp) _mm_subs_pu16 Beispiele

Beispiel #1

Datei: pix_subtract.cpp Projekt: avilleret/Gem

void pix_subtract :: processYUV_MMX (imageStruct &image, imageStruct &right){
  int datasize =   image.xsize * image.ysize * image.csize;
  __m64*leftPix =  (__m64*)image.data;
  __m64*rightPix = (__m64*)right.data;

  datasize=datasize/sizeof(__m64)+(datasize%sizeof(__m64)!=0);
  __m64 null64 = _mm_setzero_si64();
  __m64 offset = _mm_setr_pi16(0x80, 0x00, 0x80, 0x00);
  __m64 l0, l1, r0, r1;
  while (datasize--) {
    l1=leftPix[datasize];
    r1=rightPix[datasize];

    l0=_mm_unpacklo_pi8 (l1, null64);
    r0=_mm_unpacklo_pi8 (r1, null64);
    l1=_mm_unpackhi_pi8 (l1, null64);
    r1=_mm_unpackhi_pi8 (r1, null64);

    l0=_mm_adds_pu16(l0, offset);
    l1=_mm_adds_pu16(l1, offset);

    l0=_mm_subs_pu16(l0, r0);
    l1=_mm_subs_pu16(l1, r1);

    leftPix[datasize]=_mm_packs_pu16(l0, l1);
  }
  _mm_empty();
}

Beispiel #2

Datei: mmx-builtins.c Projekt: nightwishud/accmut

__m64 test48(__m64 a, __m64 b) {
  // CHECK: psubusw
  return _mm_subs_pu16(a, b);
}

Beispiel #3

Datei: mmx-psubusw-1.c Projekt: MaxKellermann/gcc

test (__m64 s1, __m64 s2)
{
  return _mm_subs_pu16 (s1, s2);
}

Beispiel #4

Datei: mmx-builtins.c Projekt: LegalizeAdulthood/clang

__m64 test_mm_subs_pu16(__m64 a, __m64 b) {
  // CHECK-LABEL: test_mm_subs_pu16
  // CHECK: call x86_mmx @llvm.x86.mmx.psubus.w
  return _mm_subs_pu16(a, b);
}