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is_nan.hpp
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1 #ifndef STAN_AGRAD_REV_FUNCTIONS_IS_NAN_HPP
2 #define STAN_AGRAD_REV_FUNCTIONS_IS_NAN_HPP
3 
4 #include <stan/agrad/rev/var.hpp>
5 #include <stan/agrad/rev/internal/v_vari.hpp>
6 #include <stan/math/functions/is_nan.hpp>
7 #include <stan/math/constants.hpp>
8 
9 namespace stan {
10 
11  namespace agrad {
12 
21  inline
22  int
23  is_nan(const var& v) {
24  return stan::math::is_nan(v.val());
25  }
26 
27  }
28 }
29 
30 #endif
stan::agrad::is_nan
int is_nan(const fvar< T > &x)
Returns 1 if the input's value is NaN and 0 otherwise.
Definition: is_nan.hpp:22
stan::agrad::var::val
double val() const
Return the value of this variable.
Definition: var.hpp:209
v_vari.hpp
stan::math::is_nan
int is_nan(const double x)
Returns 1 if the input is NaN and 0 otherwise.
Definition: is_nan.hpp:19
stan::agrad::var
Independent (input) and dependent (output) variables for gradients.
Definition: var.hpp:27
is_nan.hpp
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