1 #ifndef STAN_MATH_REV_SCAL_FUN_IS_UNINITIALIZED_HPP
2 #define STAN_MATH_REV_SCAL_FUN_IS_UNINITIALIZED_HPP
Independent (input) and dependent (output) variables for gradients.
bool is_uninitialized(T x)
Returns true if the specified variable is uninitialized.
bool is_uninitialized()
Return true if this variable has been declared, but not been defined.