TOWLOWER(3)                Linux Programmer's Manual               TOWLOWER(3)

NAME
       towlower, towlower_l - convert a wide character to lowercase

SYNOPSIS
       #include <wctype.h>

       wint_t towlower(wint_t wc);

       wint_t towlower_l(wint_t wc, locale_t locale);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       towlower_l():
           Since glibc 2.10:
                  _XOPEN_SOURCE >= 700
           Before glibc 2.10:
                  _GNU_SOURCE

DESCRIPTION
       The  towlower()  function  is  the  wide-character  equivalent  of  the
       tolower(3) function.  If wc is an uppercase wide character,  and  there
       exists  a  lowercase  equivalent  in the current locale, it returns the
       lowercase equivalent of  wc.   In  all  other  cases,  wc  is  returned
       unchanged.

       The towupper_l() function performs the same task, but performs the con-
       version based on the character type information in the locale specified
       by  locale.  The behavior of towupper_l() is undefined if locale is the
       special locale object LC_GLOBAL_LOCALE (see duplocale(3)) or is  not  a
       valid locale object handle.

       The argument wc must be representable as a wchar_t and be a valid char-
       acter in the locale or be the value WEOF.

RETURN VALUE
       If wc was convertible to lowercase, towlower()  returns  its  lowercase
       equivalent; otherwise it returns wc.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The  towlower()  function  is  thread-safe  with exceptions.  It can be
       safely used in multithreaded applications, as long as  setlocale(3)  is
       not called to change the locale during its execution.

VERSIONS
       The towlower_l() function first appeared in glibc 2.3.

CONFORMING TO
       towlower():  C99,  POSIX.1-2001  (XSI);  present as an XSI extension in
       POSIX.1-2008, but marked obsolete.

       towlower_l(): POSIX.1-2008.

NOTES
       The behavior of these functions depends on the LC_CTYPE category of the
       locale.

       These functions are not very appropriate for dealing with Unicode char-
       acters, because Unicode knows about three cases: upper, lower and title
       case.

SEE ALSO
       iswlower(3), towctrans(3), towupper(3), locale(7)

COLOPHON
       This  page  is  part of release 3.74 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       http://www.kernel.org/doc/man-pages/.

GNU                               2014-03-18                       TOWLOWER(3)

Czas wygenerowania: 0.00011 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

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