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/* This tests for a bug in regstack that was breaking glibc's math library. */

extern void abort (void);

static __inline double

minus_zero (void)

{

  union { double __d; int __i[2]; } __x;

  __x.__i[0] = 0x0;

  __x.__i[1] = 0x80000000;

  return __x.__d;

}

static __inline long double

__atan2l (long double __y, long double __x)

{

  register long double __value;

  __asm __volatile__ ("fpatan\n\t"

                      : "=t" (__value)

                      : "0" (__x), "u" (__y)

                      : "st(1)");

  return __value;

}

static __inline long double

__sqrtl (long double __x)

{

  register long double __result;

  __asm __volatile__ ("fsqrt" : "=t" (__result) : "0" (__x));

  return __result;

}

static __inline double

asin (double __x)

{

  return __atan2l (__x, __sqrtl (1.0 - __x * __x));

}

int

main (void)

{

  double x;

  x = minus_zero();

  x = asin (x);

  if (x != 0.0) /* actually -0.0, but 0.0 == -0.0 */

    abort ();

  return 0;

}