modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/ieee/20011123-1.c (about)

     1  main()
     2  {
     3    double db1 = 1.7976931348623157e+308;
     4    long double ldb1 = db1;
     5  
     6    if (sizeof (double) != 8 || sizeof (long double) != 16)
     7      exit (0);
     8  
     9    if (ldb1 != 1.7976931348623157e+308)
    10      abort ();
    11    exit (0);
    12  }