Subversion Repositories openrisc

struct

  {

    int input;

    int output;

  }

ffstesttab[] =

  {

#if __INT_MAX__ >= 2147483647

    /* at least 32-bit integers */

    { 0x80000000, 32 },

    { 0xa5a5a5a5, 1 },

    { 0x5a5a5a5a, 2 },

    { 0xcafe0000, 18 },

#endif

#if __INT_MAX__ >= 32767

    /* at least 16-bit integers */

    { 0x8000, 16 },

    { 0xa5a5, 1 },

    { 0x5a5a, 2 },

    { 0x0ca0, 6 },

#endif

#if __INT_MAX__ < 32767

#error integers are too small

#endif

  };

#define NFFSTESTS (sizeof (ffstesttab) / sizeof (ffstesttab[0]))

extern void abort (void);

extern void exit (int);

int

main (void)

{

  int i;

  for (i = 0; i < NFFSTESTS; i++)

    {

      if (__builtin_ffs (ffstesttab[i].input) != ffstesttab[i].output)

        abort ();

    }

  exit (0);

}