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50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/* Copyright (C) 2020 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef WIDE_DECIMAL_UTILS_H
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#define WIDE_DECIMAL_UTILS_H
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#include <cstdint>
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#include "mcs_basic_types.h"
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namespace utils
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{
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const int128_t minInt128 = int128_t(0x8000000000000000LL) << 64;
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const int128_t maxInt128 = (int128_t(0x7FFFFFFFFFFFFFFFLL) << 64) + 0xFFFFFFFFFFFFFFFFLL;
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inline void int128Max(int128_t& val)
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{
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uint64_t* ptr = reinterpret_cast<uint64_t*>(&val);
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ptr[0] = 0xFFFFFFFFFFFFFFFF;
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ptr[1] = 0x7FFFFFFFFFFFFFFF;
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}
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inline void int128Min(int128_t& val)
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{
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val = int128_t(0x8000000000000000LL) << 64;
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}
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inline void uint128Max(uint128_t& val)
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{
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uint64_t* ptr = reinterpret_cast<uint64_t*>(&val);
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ptr[0] = 0xFFFFFFFFFFFFFFFF;
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ptr[1] = 0xFFFFFFFFFFFFFFFF;
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}
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} // namespace utils
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#endif // WIDE_DECIMAL_UTILS_H
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