extern const double relaxed_threshold_clearance_d;
extern const double threshold_clearance_d;
extern bertini::mpfr_float threshold_clearance_mp;
extern const unsigned CLASS_TEST_MPFR_DEFAULT_DIGITS;

extern const std::string xstr_real;
extern const std::string xstr_imag;
extern const std::string ystr_real;
extern const std::string ystr_imag;
extern const std::string astr_real;
extern const std::string astr_imag;
extern const std::string bstr_real;
extern const std::string bstr_imag;
extern const std::string pstr_real;
extern const std::string pstr_imag;
extern const std::string zstr_real;
extern const std::string zstr_imag;

extern const bertini::dbl xnum_dbl;
extern const bertini::dbl ynum_dbl;
extern const bertini::dbl znum_dbl;
extern const bertini::dbl anum_dbl;
extern const bertini::dbl bnum_dbl;
extern const bertini::dbl pnum_dbl;

extern bertini::mpfr xnum_mpfr;
extern bertini::mpfr ynum_mpfr;
extern bertini::mpfr znum_mpfr;
extern bertini::mpfr anum_mpfr;
extern bertini::mpfr bnum_mpfr;
extern bertini::mpfr pnum_mpfr;