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This commit is contained in:
Leonid Fedorov
2022-01-21 16:43:49 +00:00
parent 6b6411229f
commit 04752ec546
1376 changed files with 393460 additions and 412662 deletions
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121
utils/common/columnwidth.h
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@ -1,4 +1,4 @@
/* Copyright (C) 2020 MariaDB Corporation
/* 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
@ -21,70 +21,61 @@
namespace utils
{
const uint8_t MAXLEGACYWIDTH = 8ULL;
const uint8_t MAXCOLUMNWIDTH = 16ULL;
inline bool isWide(uint8_t width)
{
return width > MAXLEGACYWIDTH;
}
inline bool isNarrow(uint8_t width)
{
return width <= MAXLEGACYWIDTH;
}
/** @brief Map a DECIMAL precision to data width in bytes */
inline uint8_t widthByPrecision(unsigned p)
{
if (LIKELY(p > 18 && p < 39))
return 16;
switch (p)
{
case 1:
case 2:
return 1;
case 3:
case 4:
return 2;
case 5:
case 6:
case 7:
case 8:
case 9:
return 4;
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
return 8;
default:
return 16;
}
}
inline uint8_t precisionByWidth(unsigned w)
{
switch(w)
{
case 16:
return 38;
// In case we will support decimals that spans 32 bytes.
default:
return 65;
}
}
const uint8_t MAXLEGACYWIDTH = 8ULL;
const uint8_t MAXCOLUMNWIDTH = 16ULL;
inline bool isWide(uint8_t width)
{
return width > MAXLEGACYWIDTH;
}
inline bool isNarrow(uint8_t width)
{
return width <= MAXLEGACYWIDTH;
}
/** @brief Map a DECIMAL precision to data width in bytes */
inline uint8_t widthByPrecision(unsigned p)
{
if (LIKELY(p > 18 && p < 39))
return 16;
switch (p)
{
case 1:
case 2: return 1;
case 3:
case 4: return 2;
case 5:
case 6:
case 7:
case 8:
case 9: return 4;
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18: return 8;
default: return 16;
}
}
inline uint8_t precisionByWidth(unsigned w)
{
switch (w)
{
case 16: return 38;
// In case we will support decimals that spans 32 bytes.
default: return 65;
}
}
} // namespace utils