static ex zeta1_eval(const ex & x)
{
if (x.info(info_flags::numeric)) {
- numeric y = ex_to<numeric>(x);
+ const numeric &y = ex_to<numeric>(x);
// trap integer arguments:
if (y.is_integer()) {
if (y.is_zero())
return _ex_1_2;
- if (x.is_equal(_ex1))
+ if (y.is_equal(_num1))
throw(std::domain_error("zeta(1): infinity"));
- if (x.info(info_flags::posint)) {
- if (x.info(info_flags::odd))
+ if (y.info(info_flags::posint)) {
+ if (y.info(info_flags::odd))
return zeta(x).hold();
else
- return abs(bernoulli(y))*pow(Pi,x)*pow(_num2,y-_num1)/factorial(y);
+ return abs(bernoulli(y))*pow(Pi,y)*pow(_num2,y-_num1)/factorial(y);
} else {
- if (x.info(info_flags::odd))
+ if (y.info(info_flags::odd))
return -bernoulli(_num1-y)/(_num1-y);
else
- return _num0;
+ return _ex0;
}
}
// zeta(float)
- if (x.info(info_flags::numeric) && !x.info(info_flags::crational))
+ if (y.info(info_flags::numeric) && !y.info(info_flags::crational))
return zeta1_evalf(x);
}
return zeta(x).hold();