1 #ifndef STAN_MATH_REV_SCAL_FUN_BOOST_ISNAN_HPP 2 #define STAN_MATH_REV_SCAL_FUN_BOOST_ISNAN_HPP 4 #include <boost/math/special_functions/fpclassify.hpp>
Reimplementing boost functionality.
Independent (input) and dependent (output) variables for gradients.
bool isnan(const stan::math::var &v)
Checks if the given number is NaN.
double val() const
Return the value of this variable.