1#ifndef STAN_MATH_PRIM_FUN_AS_BOOL_HPP
2#define STAN_MATH_PRIM_FUN_AS_BOOL_HPP
bool as_bool(const T &x)
Return true if the argument is not equal to zero (in the != operator sense) and false otherwise.
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...