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  1. /* Public domain.  */
  2. typedef int SItype __attribute__ ((mode (SI)));
  3. typedef unsigned int USItype __attribute__ ((mode (SI)));
  4. typedef float DFtype __attribute__ ((mode (DF)));
  5.  
  6. DFtype
  7. __floatunsidf (USItype u)
  8. {
  9.   SItype s = (SItype) u;
  10.   DFtype r = (DFtype) s;
  11.   if (s < 0)
  12.     r += (DFtype)2.0 * (DFtype) ((USItype) 1
  13.                                  << (sizeof (USItype) * __CHAR_BIT__ - 1));
  14.   return r;
  15. }
  16.