int
main (void)
{
tests_start_mpfr ();
mpfr_test_init ();
#ifndef MPFR_DOUBLE_SPEC
printf ("Warning! The MPFR_DOUBLE_SPEC macro is not defined. This means\n"
"that you do not have a conforming C implementation and problems\n"
"may occur with conversions between MPFR numbers and standard\n"
"floating-point types. Please contact the MPFR team.\n");
#elif MPFR_DOUBLE_SPEC == 0
/*
printf ("The type 'double' of your C implementation does not seem to\n"
"correspond to the IEEE-754 double precision. Though code has\n"
"been written to support such implementations, tests have been\n"
"done only on IEEE-754 double-precision implementations and\n"
"conversions between MPFR numbers and standard floating-point\n"
"types may be inaccurate. You may wish to contact the MPFR team\n"
"for further testing.\n");
*/
printf ("The type 'double' of your C implementation does not seem to\n"
"correspond to the IEEE-754 double precision. Such particular\n"
"implementations are not supported yet, and conversions between\n"
"MPFR numbers and standard floating-point types may be very\n"
"inaccurate.\n");
printf ("FLT_RADIX = %ld\n", (long) FLT_RADIX);
printf ("DBL_MANT_DIG = %ld\n", (long) DBL_MANT_DIG);
printf ("DBL_MIN_EXP = %ld\n", (long) DBL_MIN_EXP);
printf ("DBL_MAX_EXP = %ld\n", (long) DBL_MAX_EXP);
#endif
if (check_denorms ())
exit (1);
check_inf_nan ();
check_min();
check_max();
check_get_d_2exp_inf_nan ();
tests_end_mpfr ();
return 0;
}
int
main (void)
{
#ifdef MPFR_HAVE_FESETROUND
mpfr_t half, x, y;
mp_rnd_t rnd_mode;
#endif
mpfr_test_init ();
#ifdef MPFR_HAVE_FESETROUND
mpfr_init2(half, 2);
mpfr_set_ui(half, 1, GMP_RNDZ);
mpfr_div_2ui(half, half, 1, GMP_RNDZ); /* has exponent 0 */
mpfr_init2(x, 128);
mpfr_init2(y, 128);
for (rnd_mode = 0; rnd_mode <= 3; rnd_mode++)
{
int i, j, si, sj;
double di, dj;
mpfr_set_machine_rnd_mode (rnd_mode);
for (i = 1, di = 0.25; i < 127; i++, di *= 0.5)
for (si = 0; si <= 1; si++)
{
mpfr_div_2ui (x, half, i, GMP_RNDZ);
(si ? mpfr_sub : mpfr_add)(x, half, x, GMP_RNDZ);
/* x = 1/2 +/- 1/2^(1+i) */
for (j = i+1, dj = di * 0.5; j < 128 && j < i+53; j++, dj *= 0.5)
for (sj = 0; sj <= 1; sj++)
{
double c, d, dd;
int exp;
char *f;
mpfr_div_2ui (y, half, j, GMP_RNDZ);
(sj ? mpfr_sub : mpfr_add)(y, x, y, GMP_RNDZ);
/* y = 1/2 +/- 1/2^(1+i) +/- 1/2^(1+j) */
exp = (LONG_RAND() % 47) - 23;
mpfr_mul_2si (y, y, exp, GMP_RNDZ);
if (mpfr_inexflag_p())
{
fprintf(stderr, "Error in tget_d: inexact flag for "
"(i,si,j,sj,rnd,exp) = (%d,%d,%d,%d,%d,%d)\n",
i, si, j, sj, rnd_mode, exp);
exit(1);
}
dd = si != sj ? di - dj : di + dj;
d = si ? 0.5 - dd : 0.5 + dd;
if ((LONG_RAND() / 1024) & 1)
{
c = mpfr_get_d (y, rnd_mode);
f = "mpfr_get_d";
}
else
{
exp = (LONG_RAND() % 47) - 23;
c = mpfr_get_d3 (y, exp, rnd_mode);
f = "mpfr_get_d3";
if (si) /* then real d < 0.5 */
d *= sj && i == 1 ? 4 : 2; /* normalize real d */
}
if (exp > 0)
d *= 1 << exp;
if (exp < 0)
d /= 1 << -exp;
if (c != d)
{
fprintf (stderr, "Error in tget_d (%s) for "
"(i,si,j,sj,rnd,exp) = (%d,%d,%d,%d,%d,%d)\n"
"got %.25Le instead of %.25Le\n"
"Difference: %.19e\n",
f, i, si, j, sj, rnd_mode, exp,
(long double) c, (long double) d, d - c);
exit (1);
}
}
}
}
mpfr_clear(half);
mpfr_clear(x);
mpfr_clear(y);
#endif
if (check_denorms ())
exit (1);
return 0;
}
