gcc/testsuite/gcc.target/i386/20030217-2.c

   1 /* Test whether denormal floating point constants in hexadecimal notation
   2    are parsed correctly.  */
   3 /* { dg-do run } */
   4 /* { dg-options "-std=c99" } */
   5
   6 long double d;
   7 long double e;
   8
   9 long double f = 2.2250738585072014E-308L;
  10
  11 extern void abort (void);
  12 extern void exit (int);
  13
  14 int
  15 main (void)
  16 {
  17    d = 0x0.0000003ffffffff00000p-1048L;
  18    e = 0x0.0000003ffffffff00000p-1047L;
  19   if (d != e / 2.0)
  20     abort ();
  21
  22   exit (0);
  23 }