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Simple case folding of a wide character.
- Parameters:
-
| wc | the wide character to fold. |
- Returns:
- If a simple folding is defined, the folded version of
wc is returned, otherwise wc is returned unchanged.
- Remarks:
- This function performs simple case folding using two accesses in large lookup tables.
Case folding provides a mapping between characters that only differ in case. This is useful for case insensitive comparison. Simple case folding maps a single wide character to another single wide character (usually lower case). Full case folding, instead, may map a single wide character to more wide characters. |