softfloat/8086/s_f64UIToCommonNaN.c

   1
   2 #include <stdint.h>
   3 #include "platform.h"
   4 #include "specialize.h"
   5 #include "softfloat.h"
   6
   7 /*----------------------------------------------------------------------------
   8 | Returns the result of converting the double-precision floating-point NaN
   9 | `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid
  10 | exception is raised.
  11 *----------------------------------------------------------------------------*/
  12 struct commonNaN softfloat_f64UIToCommonNaN( uint_fast64_t uiA )
  13 {
  14     struct commonNaN z;
  15
  16     if ( softfloat_isSigNaNF64UI( uiA ) ) {
  17         softfloat_raiseFlags( softfloat_flag_invalid );
  18     }
  19     z.sign = uiA>>63;
  20     z.v64 = uiA<<12;
  21     z.v0 = 0;
  22     return z;
  23
  24 }
  25