1  /* Tests for _FloatN / _FloatNx types: compile and execution tests for
       2     NaNs, SNAN macros in <float.h>.  Before including this file, define
       3     WIDTH as the value N; define EXT to 1 for _FloatNx and 0 for
       4     _FloatN.  */
       5  
       6  #define CONCATX(X, Y) X ## Y
       7  #define CONCAT(X, Y) CONCATX (X, Y)
       8  #define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z)
       9  #define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z)
      10  
      11  #if EXT
      12  # define TYPE CONCAT3 (_Float, WIDTH, x)
      13  # define SNAN CONCAT3 (FLT, WIDTH, X_SNAN)
      14  #else
      15  # define TYPE CONCAT (_Float, WIDTH)
      16  # define SNAN CONCAT3 (FLT, WIDTH, _SNAN)
      17  #endif
      18  
      19  #define __STDC_WANT_IEC_60559_TYPES_EXT__
      20  #include <fenv.h>
      21  #include <float.h>
      22  
      23  extern void exit (int);
      24  extern void abort (void);
      25  
      26  volatile TYPE nans_cst = SNAN;
      27  
      28  int
      29  main (void)
      30  {
      31    volatile TYPE r;
      32    r = nans_cst + nans_cst;
      33    if (!fetestexcept (FE_INVALID))
      34      abort ();
      35    exit (0);
      36  }