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/* This tests for a bug in regstack that was breaking glibc's math library. */
/* { dg-skip-if "" { ! { i?86-*-* x86_64-*-* } } } */
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;
}
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