friend numeric asinh(numeric const & x);
friend numeric acosh(numeric const & x);
friend numeric atanh(numeric const & x);
friend numeric asinh(numeric const & x);
friend numeric acosh(numeric const & x);
friend numeric atanh(numeric const & x);
friend numeric abs(numeric const & x);
friend numeric mod(numeric const & a, numeric const & b);
friend numeric smod(numeric const & a, numeric const & b);
friend numeric abs(numeric const & x);
friend numeric mod(numeric const & a, numeric const & b);
friend numeric smod(numeric const & a, numeric const & b);
numeric factorial(numeric const & n);
numeric doublefactorial(numeric const & n);
numeric binomial(numeric const & n, numeric const & k);
numeric factorial(numeric const & n);
numeric doublefactorial(numeric const & n);
numeric binomial(numeric const & n, numeric const & k);
numeric abs(numeric const & x);
numeric mod(numeric const & a, numeric const & b);
numeric abs(numeric const & x);
numeric mod(numeric const & a, numeric const & b);