towupperLa

TowupperLa is a fictional locale-aware uppercase transformation function described here as an illustrative concept for text processing. The name suggests an extension of the standard wide-character utility family to cover Latin-script locale rules by using a Latin locale indicator “La.” It is not part of any official standard and is used to discuss how locale data can influence character case mappings.

Overview and design: TowupperLa takes a wide character input and returns its uppercase equivalent using rules defined by the active Latin (La) locale. It relies on Unicode case mappings and locale data to handle alphabetic characters with language-specific variants, such as Turkish or Azeri when those rules are in scope. Non-letter characters are returned unchanged. The function aims to provide predictable, locale-consistent results across common Western and Latin-script alphabets.

Relation to existing functions: TowupperLa is conceptually related to towupper and towupper_l in C’s wchar.h. Unlike towupper, which uses the global C locale, and towupper_l, which takes an explicit locale object, TowupperLa emphasizes a Latin-centric locale assumption and may be implemented as part of a higher-level internationalization API. Implementations would vary; some would implement it as a wrapper around towupper_l with a preset La locale, while others might embed a small Latin-specific mapping table.

Usage example: wchar_t c = L'a'; wchar_t C = towupperLa(c); // yields L'A' in a Latin locale. Exact results depend on the library’s locale data and the rules associated with the La setting.

See also: towupper, towupper_l, locale, Unicode case mapping.