blob: 7021b99ad7fde1f5852fb08732451726696d112c [file] [log] [blame]
extern void abort();
typedef union {
struct {
unsigned int hi;
unsigned int lo;
} i;
double d;
} hexdouble;
static const double twoTo52 = 0x1.0p+52;
void func ( double x )
{
hexdouble argument;
register double y, z;
unsigned int xHead;
argument.d = x;
xHead = argument.i.hi & 0x7fffffff;
if (__builtin_expect(!!(xHead < 0x43300000u), 1))
{
y = ( x - twoTo52 ) + twoTo52;
if ( y != x )
abort();
z = x - 0.5;
y = ( z - twoTo52 ) + twoTo52;
if ( y == (( x - twoTo52 ) + twoTo52) )
abort();
}
return;
}
int main()
{
if (sizeof (double) == 4)
return 0;
func((double)1.00);
return 0;
}