def __rsub__(self, other):
res = _new_mpfr()
if isinstance(other, mpq):
# There is no mpfr_q_sub
gmp.mpfr_sub_q(res, self._mpfr, other._mpq, gmp.MPFR_RNDN)
gmp.mpfr_neg(res, res, gmp.MPFR_RNDN)
elif isinstance(other, mpz):
gmp.mpfr_z_sub(res, other._mpz, self._mpfr, gmp.MPFR_RNDN)
elif isinstance(other, float):
gmp.mpfr_d_sub(res, other, self._mpfr, gmp.MPFR_RNDN)
elif isinstance(other, (int, long)):
if -sys.maxsize - 1 <= other <= sys.maxsize:
gmp.mpfr_si_sub(res, other, self._mpfr, gmp.MPFR_RNDN)
elif 0 <= other <= MAX_UI:
gmp.mpfr_ui_sub(res, other, self._mpfr, gmp.MPFR_RNDN)
else:
tmp_mpz = _new_mpz()
_pylong_to_mpz(other, tmp_mpz)
gmp.mpfr_z_sub(res, tmp_mpz, self._mpfr, gmp.MPFR_RNDN)
_del_mpz(tmp_mpz)
else:
return NotImplemented
return mpfr._from_c_mpfr(res)
def __rsub__(self, other):
res = _new_mpc() # TODO use context precision
if isinstance(other, mpfr):
gmp.mpc_fr_sub(res, other._mpfr, self._mpc, gmp.MPC_RNDNN)
elif isinstance(other, mpq):
gmp.mpfr_sub_q(gmp.mpc_realref(res), gmp.mpc_realref(self._mpc),
other._mpq, gmp.MPFR_RNDN)
gmp.mpfr_neg(gmp.mpc_realref(res), gmp.mpc_realref(res),
gmp.MPFR_RNDN)
gmp.mpfr_set(gmp.mpc_imagref(res), gmp.mpc_imagref(self._mpc),
gmp.MPFR_RNDN)
elif isinstance(other, mpz):
gmp.mpfr_z_sub(gmp.mpc_realref(res), other._mpz,
gmp.mpc_realref(self._mpc), gmp.MPFR_RNDN)
gmp.mpfr_neg(gmp.mpc_imagref(res), gmp.mpc_imagref(self._mpc),
gmp.MPFR_RNDN)
elif isinstance(other, complex):
gmp.mpfr_d_sub(gmp.mpc_realref(res), other.real,
gmp.mpc_realref(self._mpc), gmp.MPFR_RNDN)
gmp.mpfr_d_sub(gmp.mpc_imagref(res), other.imag,
gmp.mpc_imagref(self._mpc), gmp.MPFR_RNDN)
elif isinstance(other, float):
gmp.mpfr_d_sub(gmp.mpc_realref(res), other,
gmp.mpc_realref(self._mpc), gmp.MPFR_RNDN)
gmp.mpfr_neg(gmp.mpc_imagref(res), gmp.mpc_imagref(self._mpc),
gmp.MPFR_RNDN)
elif isinstance(other, (int, long)):
if 0 <= other <= MAX_UI:
gmp.mpc_ui_sub(res, other, self._mpc, gmp.MPC_RNDNN)
elif -sys.maxsize - 1 <= other <= sys.maxsize:
gmp.mpfr_si_sub(gmp.mpc_realref(res), other,
gmp.mpc_realref(self._mpc), gmp.MPFR_RNDN)
gmp.mpfr_neg(gmp.mpc_imagref(res), gmp.mpc_imagref(self._mpc),
gmp.MPFR_RNDN)
else:
tmp_mpz = _new_mpz()
_pyint_to_mpz(other, tmp_mpz)
gmp.mpfr_z_sub(gmp.mpc_realref(res), tmp_mpz,
gmp.mpc_realref(self._mpc), gmp.MPFR_RNDN)
gmp.mpfr_neg(gmp.mpc_imagref(res), gmp.mpc_imagref(self._mpc),
gmp.MPFR_RNDN)
_del_mpz(tmp_mpz)
else:
return NotImplemented
return mpc._from_c_mpc(res)