Stan Math Library  2.20.0
reverse mode automatic differentiation
is_nan.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_IS_NAN_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_IS_NAN_HPP
3 
4 #include <stan/math/fwd/meta.hpp>
5 #include <stan/math/fwd/core.hpp>
7 
8 namespace stan {
9 namespace math {
10 
19 template <typename T>
20 inline int is_nan(const fvar<T>& x) {
21  return is_nan(x.val());
22 }
23 
24 } // namespace math
25 } // namespace stan
26 #endif
T val() const
Return the value of this variable.
Definition: fvar.hpp:57
int is_nan(const fvar< T > &x)
Returns 1 if the input&#39;s value is NaN and 0 otherwise.
Definition: is_nan.hpp:20
This template class represents scalars used in forward-mode automatic differentiation, which consist of values and directional derivatives of the specified template type.
Definition: fvar.hpp:41

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