towlower

 

C

Language

Type support

Dynamic memory management

Error handling

Program utilities

Date and time utilities

Strings library

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Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

 

Strings library

Byte strings

Multibyte strings

Wide strings

 

Null-terminated wide strings

Functions
Character manipulation
iswalnum iswalpha iswlower iswupper iswdigit iswxdigit iswblank (C++11) wctype iswctype	iswcntrl iswgraph iswspace iswprint iswpunct towlower towupper wctrans towctrans
Conversions to numeric formats
wcstol wcstoll wcstoul wcstoull	wcstof wcstod wcstold
String manipulation
wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp	wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok
Array manipulation
wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset

 

Defined in header <wctype.h>
wint_t towlower( wint_t ch );

Converts the given wide character to lowercase, if possible.

Parameters

ch

-

wide character to be converted

Return value

Lowercase version of ch or unmodified ch if no lowercase version is listed in the current C locale.

Notes

Only 1:1 character mapping can be performed by this function, e.g. the Greek uppercase letter 'Σ' has two lowercase forms, depending on the position in a word: 'σ' and 'ς'. A call to towlower cannot be used to obtain the correct lowercase form in this case.

See also

towupper	converts a wide character to uppercase (function)
tolower	converts a character to lowercase (function)