Rcpp Version 0.12.12
is_nan.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
2 //
3 // is_nan.h: Rcpp R/C++ interface class library -- is NaN
4 //
5 // Copyright (C) 2013 Dirk Eddelbuettel and Romain Francois
6 //
7 // This file is part of Rcpp.
8 //
9 // Rcpp is free software: you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License as published by
11 // the Free Software Foundation, either version 2 of the License, or
12 // (at your option) any later version.
13 //
14 // Rcpp is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
18 //
19 // You should have received a copy of the GNU General Public License
20 // along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
21 
22 #ifndef Rcpp__traits_is_nan_h
23 #define Rcpp__traits_is_nan_h
24 
25 namespace Rcpp{
26 namespace traits{
27 
28  // default for most types
29  template <int RTYPE>
31  return false ;
32  }
33 
34  template <>
35  inline bool is_nan<REALSXP>( double x ){
36  return internal::Rcpp_IsNaN(x) ;
37  }
38 
39  template <>
40  inline bool is_nan<CPLXSXP>( Rcomplex x ){
41  return internal::Rcpp_IsNaN(x.r) || internal::Rcpp_IsNaN(x.i) ;
42  }
43 
44 }
45 }
46 
47 #endif
bool is_nan< CPLXSXP >(Rcomplex x)
Definition: is_nan.h:40
bool is_nan< REALSXP >(double x)
Definition: is_nan.h:35
bool is_nan(typename storage_type< RTYPE >::type)
Definition: is_nan.h:30
Rcpp API.
Definition: algo.h:28