1  /* { dg-do compile } */
       2  
       3  typedef unsigned char Uint8;
       4  typedef int Sint32;
       5  typedef unsigned int Uint32;
       6  
       7  typedef union RMColorDataRef
       8  {
       9    Uint8* data8;
      10  } RMColorDataRef;
      11  
      12  typedef struct RMColorData
      13  {
      14    Uint32 dataCount;
      15    RMColorDataRef dataRef;
      16  } RMColorData;
      17  
      18  typedef struct RMColorTable
      19  {
      20    Uint8 dataCompsOut;
      21    RMColorDataRef dataRef;
      22  } RMColorTable;
      23  
      24  int fail ( const RMColorData * pInColor,
      25  	   RMColorData * pOutColor,
      26  	   const RMColorTable * pColorTable )
      27  {
      28    Uint32 comp;
      29    Uint8 nCompOut;
      30  
      31    Sint32 result;
      32  
      33    Uint32 interpFrac1, interpFrac2, interpFrac3;
      34    Sint32 val0, val1, val2, val3;
      35  
      36    Uint8 * pOut;
      37  
      38    const Uint8 * pClutData;
      39    const Uint8 * pCornerPoint0;
      40  
      41    Uint8 lastOut[((8) > (4) ? (8) : (4))];
      42  
      43    pOut = pOutColor->dataRef.data8;
      44    pClutData = pColorTable->dataRef.data8;
      45  
      46    nCompOut = pColorTable->dataCompsOut;
      47  
      48    pCornerPoint0 = pClutData;
      49  
      50    for (comp = 0; comp < nCompOut; comp++)
      51      {
      52        val0 = *pCornerPoint0++;
      53  
      54        result = val0 << 4;
      55  
      56        result += (val1 - val0) * interpFrac1;
      57        result += (val2 - val1) * interpFrac2;
      58        result += (val3 - val2) * interpFrac3;
      59  
      60        *pOut++ = lastOut[comp] = (Uint8)(result >> 4);
      61      }
      62  
      63    return (0);
      64  }
      65