toolchain/gcc/gcc/testsuite/gcc.c-torture/unsorted/udconvert.c

   1 double
   2 unsigned_to_double1 (u)
   3      unsigned u;
   4 {
   5   double d;
   6   d = (int) u;                  /* convert as from a *signed* integer */
   7   return ((int) u < 0)
   8     ? d + 4294967296.0
   9       : d;
  10 }
  11
  12 /* Alternatively */
  13
  14 double
  15 unsigned_to_double2 (u)
  16      unsigned u;
  17 {
  18   double d;
  19   u -= 2147483648;              /* complement sign bit */
  20   d = (int) u;                  /* convert as from a *signed* integer */
  21   return d + 2147483648.0;
  22 }
  23
  24 unsigned
  25 double_to_unsigned (d)
  26      double d;
  27 {
  28   d += 2147483648.0;
  29   return ((int) d) - 2147483648;
  30 }