CppADCodeGen 2.4.3
A C++ Algorithmic Differentiation Package with Source Code Generation
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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
18namespace CppAD {
19
20template <class Base>
21inline 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