Stan Math Library  2.20.0
reverse mode automatic differentiation
std_isnan.hpp
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1 #ifndef STAN_MATH_REV_CORE_STD_ISNAN_HPP
2 #define STAN_MATH_REV_CORE_STD_ISNAN_HPP
3 
5 #include <cmath>
6 
7 namespace std {
8 
18 inline int isnan(const stan::math::var& a) { return isnan(a.val()); }
19 
20 } // namespace std
21 #endif
Independent (input) and dependent (output) variables for gradients.
Definition: var.hpp:33
int isnan(const stan::math::var &a)
Checks if the given number is NaN.
Definition: std_isnan.hpp:18
double val() const
Return the value of this variable.
Definition: var.hpp:294

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