int
fmpr_get_mpfr(mpfr_t x, const fmpr_t y, mpfr_rnd_t rnd)
{
int r;
if (fmpr_is_special(y))
{
if (fmpr_is_zero(y)) mpfr_set_zero(x, 0);
else if (fmpr_is_pos_inf(y)) mpfr_set_inf(x, 1);
else if (fmpr_is_neg_inf(y)) mpfr_set_inf(x, -1);
else mpfr_set_nan(x);
r = 0;
}
else if (COEFF_IS_MPZ(*fmpr_expref(y)))
{
flint_printf("exception: exponent too large to convert to mpfr");
abort();
}
else
{
if (!COEFF_IS_MPZ(*fmpr_manref(y)))
#if defined(__MINGW64__)
r = mpfr_set_sj_2exp(x, *fmpr_manref(y), *fmpr_expref(y), rnd);
#else
r = mpfr_set_si_2exp(x, *fmpr_manref(y), *fmpr_expref(y), rnd);
#endif
else
r = mpfr_set_z_2exp(x, COEFF_TO_PTR(*fmpr_manref(y)), *fmpr_expref(y), rnd);
if (!mpfr_regular_p(x))
{
flint_printf("exception: exponent too large to convert to mpfr");
abort();
}
}
static void
check_set_sj_2exp (void)
{
mpfr_t x;
int inex;
mpfr_init2 (x, sizeof(intmax_t)*CHAR_BIT-1);
inex = mpfr_set_sj_2exp (x, MPFR_INTMAX_MIN, 1000, MPFR_RNDN);
if (inex || mpfr_sgn (x) >=0 || !mpfr_powerof2_raw (x)
|| MPFR_EXP (x) != (sizeof(intmax_t)*CHAR_BIT+1000) )
ERROR("set_sj_2exp (INTMAX_MIN)");
mpfr_clear (x);
}
int
mpfr_set_sj (mpfr_t x, intmax_t j, mp_rnd_t rnd)
{
return mpfr_set_sj_2exp (x, j, 0, rnd);
}