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FreeBSD 11.0 - man page for nextwctype_l (freebsd section 3)

ISWALNUM_L(3)						   BSD Library Functions Manual 					     ISWALNUM_L(3)

iswalnum_l, iswalpha_l, iswcntrl_l, iswctype_l, iswdigit_l, iswgraph_l, iswlower_l, iswprint_l, iswpunct_l, iswspace_l, iswupper_l, iswxdigit_l, towlower_l, towupper_l, wctype_l, iswblank_l, iswhexnumber_l, iswideogram_l, iswnumber_l, iswphonogram_l, iswrune_l, iswspecial_l, nextwctype_l, towctrans_l, wctrans_l -- wide character classification utilities
Standard C Library (libc, -lc)
#include <wctype.h> int iswalnum_l(wint_t wc, locale_t loc); int iswalpha_l(wint_t wc, locale_t loc); int iswcntrl_l(wint_t wc, locale_t loc); int iswctype_l(wint_t wc, locale_t loc); int iswdigit_l(wint_t wc, locale_t loc); int iswgraph_l(wint_t wc, locale_t loc); int iswlower_l(wint_t wc, locale_t loc); int iswprint_l(wint_t wc, locale_t loc); int iswpunct_l(wint_t wc, locale_t loc); int iswspace_l(wint_t wc, locale_t loc); int iswupper_l(wint_t wc, locale_t loc); int iswxdigit_l(wint_t wc, locale_t loc); wint_t towlower_l(wint_t wc, locale_t loc); wint_t towupper_l(wint_t wc, locale_t loc); wctype_t wctype_l(wint_t wc, locale_t loc); int iswblank_l(wint_t wc, locale_t loc); int iswhexnumber_l(wint_t wc, locale_t loc); int iswideogram_l(wint_t wc, locale_t loc); int iswnumber_l(wint_t wc, locale_t loc); int iswphonogram_l(wint_t wc, locale_t loc); int iswrune_l(wint_t wc, locale_t loc); int iswspecial_l(wint_t wc, locale_t loc); wint_t nextwctype_l(wint_t wc, locale_t loc); wint_t towctrans_l(wint_t wc, wctrans_t, locale_t loc); wctrans_t wctrans_l(const char *, locale_t loc);
The above functions are character classification utility functions, for use with wide characters (wchar_t or wint_t) in the locale loc. They behave in the same way as the versions without the _l suffix, but use the specified locale rather than the global or per-thread locale. These functions may be implemented as inline functions in <wctype.h> and as functions in the C library. See the specific manual pages for more information.
These functions return the same things as their non-locale versions. If the locale is invalid, their behaviors are undefined.
iswalnum(3), iswalpha(3), iswblank(3), iswcntrl(3), iswctype(3), iswdigit(3), iswgraph(3), iswhexnumber(3), iswideogram(3), iswlower(3), iswnumber(3), iswphonogram(3), iswprint(3), iswpunct(3), iswrune(3), iswspace(3), iswspecial(3), iswupper(3), iswxdigit(3), nextwctype(3), towctrans(3), towlower(3), towupper(3), wctrans(3), wctype(3)
These functions conform to IEEE Std 1003.1-2008 (``POSIX.1''), except for iswascii_l(), iswhexnumber_l(), iswideogram_l(), iswphonogram_l(), iswrune_l(), iswspecial_l() and nextwctype_l() which are FreeBSD extensions.
July 25, 2012 BSD