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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012-2022 OpenVPN Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// as published by the Free Software Foundation.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see <http://www.gnu.org/licenses/>.
#pragma once
#include <openvpn/common/endian_platform.hpp>
namespace openvpn {
namespace Endian {
#if defined(OPENVPN_LITTLE_ENDIAN)
inline size_t e16(const size_t v)
{
return v;
}
inline size_t e16rev(const size_t v)
{
return 15 - v;
}
inline size_t e4(const size_t v)
{
return v;
}
inline size_t e4rev(const size_t v)
{
return 3 - v;
}
inline size_t e2(const size_t v)
{
return v;
}
inline size_t e2rev(const size_t v)
{
return 1 - v;
}
#elif defined(OPENVPN_BIG_ENDIAN)
inline size_t e16rev(const size_t v)
{
return v;
}
inline size_t e16(const size_t v)
{
return 15 - v;
}
inline size_t e4rev(const size_t v)
{
return v;
}
inline size_t e4(const size_t v)
{
return 3 - v;
}
inline size_t e2rev(const size_t v)
{
return v;
}
inline size_t e2(const size_t v)
{
return 1 - v;
}
#else
#error One of OPENVPN_LITTLE_ENDIAN or OPENVPN_BIG_ENDIAN must be defined
#endif
} // namespace Endian
} // namespace openvpn
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