CppADCodeGen  2.4.3
A C++ Algorithmic Differentiation Package with Source Code Generation
nan.hpp
1 #ifndef CPPAD_CG_NAN_HPP
2 #define CPPAD_CG_NAN_HPP
3 /* --------------------------------------------------------------------------
4  * CppADCodeGen: C++ Algorithmic Differentiation with Source Code Generation:
5  * Copyright (C) 2013 Ciengis
6  *
7  * CppADCodeGen is distributed under multiple licenses:
8  *
9  * - Eclipse Public License Version 1.0 (EPL1), and
10  * - GNU General Public License Version 3 (GPL3).
11  *
12  * EPL1 terms and conditions can be found in the file "epl-v10.txt", while
13  * terms and conditions for the GPL3 can be found in the file "gpl3.txt".
14  * ----------------------------------------------------------------------------
15  * Author: Joao Leal
16  */
17 
18 namespace CppAD {
19 
20 template <class Base>
21 inline bool isnan(const cg::CG<Base> &s) {
22  using namespace CppAD::cg;
23 
24  if (s.isVariable()) {
25  return false;
26  } else {
27  // a parameter
28  const Base& v = s.getValue();
29  return (v != v);
30  }
31 }
32 
33 } // END CppAD namespace
34 
35 #endif
CppAD
Definition: abstract_atomic_fun.hpp:19