gcc/testsuite/gcc.c-torture/compile/pr38554.c

   1 typedef unsigned long sample;
   2 struct pam
   3 {
   4   sample maxval;
   5 };
   6 typedef sample *tuple;
   7 enum function
   8   {
   9     FN_MULTIPLY, FN_DIVIDE, FN_ADD, FN_SUBTRACT, FN_MIN, FN_MAX, FN_AND, FN_OR,
  10     FN_XOR, FN_NOT, FN_SHIFTLEFT, FN_SHIFTRIGHT
  11   };
  12 struct cmdlineInfo
  13 {
  14   enum function function;
  15   union
  16   {
  17     float divisor;
  18     unsigned int shiftCount;
  19   }
  20     u;
  21 };
  22 applyFunction (struct cmdlineInfo const cmdline, struct pam const inpam,
  23                struct pam const outpam, tuple * const inputRow,
  24                tuple * const outputRow)
  25 {
  26   float const oneOverDivisor = 1 / cmdline.u.divisor;
  27   int col;
  28   {
  29     int plane;
  30     {
  31       sample const inSample = inputRow[col][plane];
  32       sample outSample;
  33       switch (cmdline.function)
  34         {
  35         case FN_DIVIDE:
  36           outSample = ((unsigned int) ((inSample * oneOverDivisor) + 0.5));
  37           break;
  38         case FN_SHIFTLEFT:
  39           outSample = (inSample << cmdline.u.shiftCount) & outpam.maxval;
  40         }
  41       outputRow[col][plane] =
  42         ((outpam.maxval) < (outSample) ? (outpam.maxval) : (outSample));
  43     }
  44   }
  45 }