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util/CharUtil: add ToLowerASCII()

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This commit is contained in:
Max Kellermann 2014-08-11 18:42:05 +02:00
parent e8a5a9b1e8
commit 2ccfb71d12
1 changed files with 13 additions and 0 deletions
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13
src/util/CharUtil.hxx
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@ -126,4 +126,17 @@ ToUpperASCII(char ch)
: ch;
}
/**
* Convert the specified ASCII character (0x00..0x7f) to lower case.
* Unlike toupper(), it ignores the system locale.
*/
constexpr
static inline char
ToLowerASCII(char ch)
{
return ch >= 'A' && ch <= 'Z'
? (ch + ('a' - 'A'))
: ch;
}
#endif