Stan Math Library  2.20.0
reverse mode automatic differentiation
round.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_FWD_SCAL_FUN_ROUND_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_ROUND_HPP
3 
4 #include <stan/math/fwd/meta.hpp>
5 #include <stan/math/fwd/core.hpp>
8 #include <limits>
9 
10 namespace stan {
11 namespace math {
12 
23 template <typename T>
24 inline fvar<T> round(const fvar<T>& x) {
25  return fvar<T>(round(x.val_), is_nan(x.val_)
26  ? std::numeric_limits<double>::quiet_NaN()
27  : 0.0);
28 }
29 
30 } // namespace math
31 } // namespace stan
32 #endif
fvar< T > round(const fvar< T > &x)
Return the closest integer to the specified argument, with halfway cases rounded away from zero...
Definition: round.hpp:24
T val_
The value of this variable.
Definition: fvar.hpp:45
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

     [ Stan Home Page ] © 2011–2018, Stan Development Team.