1 #ifndef STAN_MATH_REV_CORE_OPERATOR_UNARY_NOT_HPP
2 #define STAN_MATH_REV_CORE_OPERATOR_UNARY_NOT_HPP
bool operator!(const var &a)
Prefix logical negation for the value of variables (C++).
Independent (input) and dependent (output) variables for gradients.
double val() const
Return the value of this variable.