Stan Math Library  2.20.0
reverse mode automatic differentiation
operator_unary_not.hpp
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1 #ifndef STAN_MATH_REV_CORE_OPERATOR_UNARY_NOT_HPP
2 #define STAN_MATH_REV_CORE_OPERATOR_UNARY_NOT_HPP
3 
5 
6 namespace stan {
7 namespace math {
8 
16 inline bool operator!(const var& x) { return !x.val(); }
17 
18 } // namespace math
19 } // namespace stan
20 #endif
Independent (input) and dependent (output) variables for gradients.
Definition: var.hpp:33
bool operator!(const fvar< T > &x)
Return the negation of the value of the argument as defined by !.
double val() const
Return the value of this variable.
Definition: var.hpp:294

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