gcc/testsuite/gcc.dg/graphite/id-16.c

   1 int transformation[(2*19 - 1) * (2*19 - 1)][8];
   2
   3 const int transformation2[8][2][2] = {
   4   {{1, 0}, {0, 1}},
   5   {{0, 1}, {-1, 0}},
   6   {{-1, 0}, {0, -1}},
   7   {{0, -1}, {1, 0}},
   8   {{0, -1}, {-1, 0}},
   9   {{-1, 0}, {0, 1}},
  10   {{0, 1}, {1, 0}},
  11   {{1, 0}, {0, -1}}
  12 };
  13
  14 void
  15 transformation_init (void)
  16 {
  17   int k;
  18   int dx;
  19   int dy;
  20
  21   for (k = 0; k < 8; k++)
  22     {
  23       for (dy = -19 + 1; dy <= 19 - 1; dy++)
  24         {
  25           for (dx = -19 + 1; dx <= 19 - 1; dx++)
  26             {
  27               int tx;
  28               int ty;
  29               do
  30                 {
  31                   *&tx =
  32                     transformation2[k][0][0] * (dx) +
  33                     transformation2[k][0][1] * (dy);
  34                   *&ty =
  35                     transformation2[k][1][0] * (dx) +
  36                     transformation2[k][1][1] * (dy);
  37                 }
  38               while (0);
  39               transformation[((dy + 19 - 1) * (2 * 19 - 1) +
  40                               (dx + 19 - 1))][k] = ((tx) * (19 + 1) + (ty));
  41             }
  42         }
  43     }
  44 }