cxxstd.h

/*
 *  Copyright (C) 2004-2021 Edward F. Valeev
 *
 *  This file is part of Libint.
 *
 *  Libint is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Libint is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Libint.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef _libint2_include_libint2_util_cxxstd_h_
#define _libint2_include_libint2_util_cxxstd_h_
 
#ifndef __cplusplus
# error "Libint2 requires a C++ compiler"
#endif
 
#if __cplusplus >= 201402L
# define LIBINT2_CPLUSPLUS_STD 2014
#elif __cplusplus >= 201103L
# define LIBINT2_CPLUSPLUS_STD 2011
#elif __cplusplus >= 199711L
# define LIBINT2_CPLUSPLUS_STD 1998
#else
# define LIBINT2_CPLUSPLUS_STD 0 // unknown standard
#endif
 
// workaround: standard Intel compiler (not INDE) is not standard conforming
#if defined(__INTEL_COMPILER) && LIBINT2_CPLUSPLUS_STD==0
# ifdef __INTEL_CXX11_MODE__
#  undef LIBINT2_CPLUSPLUS_STD
#  define LIBINT2_CPLUSPLUS_STD 2011
# endif
#endif
 
#endif /* header guard */