Stan Math Library  2.11.0
reverse mode automatic differentiation
is_nan.hpp
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1 #ifndef STAN_MATH_PRIM_SCAL_FUN_IS_NAN_HPP
2 #define STAN_MATH_PRIM_SCAL_FUN_IS_NAN_HPP
3 
4 #include <boost/math/special_functions/fpclassify.hpp>
5 
6 namespace stan {
7 
8  namespace math {
9 
18  inline bool is_nan(double x) {
19  return boost::math::isnan(x);
20  }
21 
22  }
23 }
24 
25 #endif
bool isnan(const stan::math::var &v)
Checks if the given number is NaN.
Definition: boost_isnan.hpp:22
int is_nan(const fvar< T > &x)
Returns 1 if the input's value is NaN and 0 otherwise.
Definition: is_nan.hpp:22

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