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MCOL-641 1. Implement int128 version of strtoll.

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2. Templatize number_int_value.
3. Add test cases for strtoll128 and number_int_value for Decimal38.
This commit is contained in:
Gagan Goel
2020-02-25 17:11:32 -05:00
committed by Roman Nozdrin
parent b29d0c9daa
commit 8f80c1dee6
5 changed files with 869 additions and 54 deletions
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67
utils/common/widedecimalutils.h Normal file
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/* Copyright (C) 2020 MariaDB Corporation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of
the License.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef WIDE_DECIMAL_UTILS_H
#define WIDE_DECIMAL_UTILS_H
namespace utils
{
using int128_t = __int128;
using uint128_t = unsigned __int128;
const uint64_t BINARYNULLVALUELOW = 0ULL;
const uint64_t BINARYNULLVALUEHIGH = 0x8000000000000000ULL;
const uint64_t BINARYEMPTYVALUELOW = 1ULL;
const uint64_t BINARYEMPTYVALUEHIGH = 0x8000000000000000ULL;
inline bool isWideDecimalNullValue(const int128_t val)
{
const uint64_t* ptr = reinterpret_cast<const uint64_t*>(&val);
return (ptr[0] == BINARYNULLVALUELOW && ptr[1] == BINARYNULLVALUEHIGH);
}
inline bool isWideDecimalEmptyValue(const int128_t val)
{
const uint64_t* ptr = reinterpret_cast<const uint64_t*>(&val);
return (ptr[0] == BINARYEMPTYVALUELOW && ptr[1] == BINARYEMPTYVALUEHIGH);
}
inline void int128Max(int128_t& val)
{
uint64_t* ptr = reinterpret_cast<uint64_t*>(&val);
ptr[0] = 0xFFFFFFFFFFFFFFFF;
ptr[1] = 0x7FFFFFFFFFFFFFFF;
}
inline void int128Min(int128_t& val)
{
uint64_t* ptr = reinterpret_cast<uint64_t*>(&val);
ptr[0] = 0;
ptr[1] = 0x8000000000000000;
}
inline void uint128Max(uint128_t& val)
{
uint64_t* ptr = reinterpret_cast<uint64_t*>(&val);
ptr[0] = 0xFFFFFFFFFFFFFFFF;
ptr[1] = 0xFFFFFFFFFFFFFFFF;
}
}
#endif // WIDE_DECIMAL_UTILS_H