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util/CharUtil: add IsHexDigit()

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This commit is contained in:
Max Kellermann 2020-04-06 12:59:33 +02:00
parent dd37b4656e
commit cc3e71d8c7
1 changed files with 8 additions and 0 deletions
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8
src/util/CharUtil.hxx
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@ -130,4 +130,12 @@ ToLowerASCII(char ch) noexcept
: ch;
}
constexpr bool
IsHexDigit(char ch) noexcept
{
return IsDigitASCII(ch) ||
(ch >= 'a' && ch <= 'f') ||
(ch >= 'A' && ch <= 'F');
}
#endif