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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 namespace math {
8
17 inline bool is_nan(double x) {
18 return boost::math::isnan(x);
19 }
20
21 }
22 }
23
24 #endif
stan
Definition: log_sum_exp.hpp:8
boost::math::isnan
bool isnan(const stan::math::var &v)
Checks if the given number is NaN.
Definition: boost_isnan.hpp:21
stan::math::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:21

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