static void
check_special (void)
{
__float128 f;
mpfr_t x;
mpfr_init2 (x, 113);
/* check NaN */
f = 0.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (mpfr_nan_p (x) == 0)
{
printf ("Error in mpfr_set_float128(x, NaN)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f == f)
{
printf ("Error in mpfr_get_float128(NaN)\n");
exit (1);
}
/* check +Inf */
f = 1.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (mpfr_inf_p (x) == 0 || mpfr_sgn (x) < 0)
{
printf ("Error in mpfr_set_float128(x, +Inf)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != (1.0 / 0.0))
{
printf ("Error in mpfr_get_float128(+Inf)\n");
exit (1);
}
/* check -Inf */
f = -1.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (mpfr_inf_p (x) == 0 || mpfr_sgn (x) > 0)
{
printf ("Error in mpfr_set_float128(x, -Inf)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != (-1.0 / 0.0))
{
printf ("Error in mpfr_get_float128(-Inf)\n");
exit (1);
}
/* check +0 */
f = 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (mpfr_zero_p (x) == 0 || mpfr_sgn (x) < 0)
{
printf ("Error in mpfr_set_float128(x, +0)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != 0.0 || 1 / f != 1 / 0.0)
{
printf ("Error in mpfr_get_float128(+0.0)\n");
exit (1);
}
/* check -0 */
f = -0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (mpfr_zero_p (x) == 0 || mpfr_sgn (x) > 0)
{
printf ("Error in mpfr_set_float128(x, -0)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != -0.0 || 1 / f != 1 / -0.0)
{
printf ("Error in mpfr_get_float128(-0.0)\n");
exit (1);
}
mpfr_clear (x);
}
static void
check_large (void)
{
__float128 f, e;
int i;
mpfr_t x, y;
mpfr_rnd_t r;
mpfr_init2 (x, 113);
mpfr_init2 (y, 113);
/* check with the largest float128 number 2^16384*(1-2^(-113)) */
for (f = 1.0, i = 0; i < 113; i++)
f = f + f;
f = f - (__float128) 1.0;
mpfr_set_ui (y, 1, MPFR_RNDN);
mpfr_mul_2exp (y, y, 113, MPFR_RNDN);
mpfr_sub_ui (y, y, 1, MPFR_RNDN);
for (i = 113; i < 16384; i++)
{
for (r = 0; r < MPFR_RND_MAX; r++)
{
mpfr_set_float128 (x, f, r);
if (! mpfr_equal_p (x, y))
{
printf ("mpfr_set_float128 failed for 2^%d*(1-2^(-113)) rnd=%s\n",
i, mpfr_print_rnd_mode (r));
printf ("got ");
mpfr_dump (x);
exit (1);
}
e = mpfr_get_float128 (x, r);
if (e != f)
{
printf ("mpfr_get_float128 failed for 2^%d*(1-2^(-113)) rnd=%s\n",
i, mpfr_print_rnd_mode (r));
exit (1);
}
}
/* check with opposite number */
f = -f;
mpfr_neg (y, y, MPFR_RNDN);
for (r = 0; r < MPFR_RND_MAX; r++)
{
mpfr_set_float128 (x, f, r);
if (! mpfr_equal_p (x, y))
{
printf ("mpfr_set_float128 failed for -2^%d*(1-2^(-113)) rnd=%s\n",
i, mpfr_print_rnd_mode (r));
printf ("got ");
mpfr_dump (x);
exit (1);
}
e = mpfr_get_float128 (x, r);
if (e != f)
{
printf ("mpfr_get_float128 failed for -2^%d*(1-2^(-113)) rnd=%s\n",
i, mpfr_print_rnd_mode (r));
exit (1);
}
}
f = -f;
mpfr_neg (y, y, MPFR_RNDN);
f = f + f;
mpfr_add (y, y, y, MPFR_RNDN);
}
mpfr_clear (x);
mpfr_clear (y);
}
static void
check_small (void)
{
__float128 f, e;
int i;
mpfr_t x, y;
mpfr_rnd_t r;
mpfr_init2 (x, 113);
mpfr_init2 (y, 113);
/* check with the smallest positive normal float128 number */
f = 1.0;
mpfr_set_ui (y, 1, MPFR_RNDN);
for (i = 0; f != 0.0; i--)
{
for (r = 0; r < MPFR_RND_MAX; r++)
{
mpfr_set_float128 (x, f, r);
if (! mpfr_equal_p (x, y))
{
printf ("mpfr_set_float128 failed for 2^%d rnd=%s\n", i,
mpfr_print_rnd_mode (r));
printf ("got ");
mpfr_dump (x);
exit (1);
}
e = mpfr_get_float128 (x, r);
if (e != f)
{
printf ("mpfr_get_float128 failed for 2^%d rnd=%s\n",
i, mpfr_print_rnd_mode (r));
exit (1);
}
/* check with opposite number */
mpfr_set_float128 (x, -f, r);
mpfr_neg (y, y, MPFR_RNDN);
if (! mpfr_equal_p (x, y))
{
printf ("mpfr_set_float128 failed for -2^%d rnd=%s\n", i,
mpfr_print_rnd_mode (r));
printf ("got ");
mpfr_dump (x);
exit (1);
}
if (e != f)
{
printf ("mpfr_get_float128 failed for -2^%d rnd=%s\n",
i, mpfr_print_rnd_mode (r));
exit (1);
}
mpfr_neg (y, y, MPFR_RNDN);
}
f = 0.5 * f;
mpfr_div_2exp (y, y, 1, MPFR_RNDN);
}
mpfr_clear (x);
mpfr_clear (y);
}
static void
check_special (void)
{
__float128 f;
mpfr_t x;
mpfr_init2 (x, 113);
#if !defined(MPFR_ERRDIVZERO)
/* check NaN */
f = 0.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (! mpfr_nan_p (x))
{
printf ("Error in mpfr_set_float128(x, NaN)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (! DOUBLE_ISNAN (f))
{
printf ("Error in mpfr_get_float128(NaN)\n");
printf ("got %f\n", (double) f);
exit (1);
}
/* check +Inf */
f = 1.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (! mpfr_inf_p (x) || MPFR_IS_NEG (x))
{
printf ("Error in mpfr_set_float128(x, +Inf)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != (1.0 / 0.0))
{
printf ("Error in mpfr_get_float128(+Inf)\n");
exit (1);
}
/* check -Inf */
f = -1.0 / 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (! mpfr_inf_p (x) || MPFR_IS_POS (x))
{
printf ("Error in mpfr_set_float128(x, -Inf)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != (-1.0 / 0.0))
{
printf ("Error in mpfr_get_float128(-Inf)\n");
exit (1);
}
#endif
/* check +0 */
f = 0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (! mpfr_zero_p (x) || MPFR_IS_NEG (x))
{
printf ("Error in mpfr_set_float128(x, +0)\n");
exit (1);
}
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != 0.0) /* the sign is not checked */
{
printf ("Error in mpfr_get_float128(+0.0)\n");
exit (1);
}
#if !defined(MPFR_ERRDIVZERO) && defined(HAVE_SIGNEDZ)
if (1 / f != 1 / 0.0) /* check the sign */
{
printf ("Error in mpfr_get_float128(+0.0)\n");
exit (1);
}
#endif
/* check -0 */
f = -0.0;
mpfr_set_float128 (x, f, MPFR_RNDN);
if (! mpfr_zero_p (x))
{
printf ("Error in mpfr_set_float128(x, -0)\n");
exit (1);
}
#if defined(HAVE_SIGNEDZ)
if (MPFR_IS_POS (x))
{
printf ("Error in mpfr_set_float128(x, -0)\n");
exit (1);
}
#endif
f = mpfr_get_float128 (x, MPFR_RNDN);
if (f != -0.0) /* the sign is not checked */
{
printf ("Error in mpfr_get_float128(-0.0)\n");
exit (1);
}
#if !defined(MPFR_ERRDIVZERO) && defined(HAVE_SIGNEDZ)
if (1 / f != 1 / -0.0) /* check the sign */
{
printf ("Error in mpfr_get_float128(-0.0)\n");
exit (1);
}
#endif
mpfr_clear (x);
}