From Cppreference
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std::wctrans_t wctrans( const char* str );
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Constructs a value of type std::wctrans_t that describes a LC_CTYPE category of wide character mapping. It may be one of the standard mappings, or a locale-specific mapping, such as "tojhira" or "tojkana".
[edit] Parameters
str
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C string holding the name of the desired mapping
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The following values of str are supported in all C locales:
[edit] Return value
std::wctrans_t object suitable for use with std::towctrans to map wide characters according to the named mapping of the current C locale or zero if str does not name a mapping supported by the current C locale.
[edit] See also
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performs character mapping according to the specified LC_CTYPE mapping category (function)
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