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

CTYPE_L(3)						   BSD Library Functions Manual 						CTYPE_L(3)

NAME
digittoint_l, isalnum_l, isalpha_l, isascii_l, isblank_l, iscntrl_l, isdigit_l, isgraph_l, ishexnumber_l, isideogram_l, islower_l, isnumber_l, isphonogram_l, isprint_l, ispunct_l, isrune_l, isspace_l, isspecial_l, isupper_l, isxdigit_l, tolower_l, toupper_l -- character classification functions
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h> int digittoint_l(int c, locale_t loc); int isalnum_l(int c, locale_t loc); int isalpha_l(int c, locale_t loc); int isascii_l(int c, locale_t loc); int iscntrl_l(int c, locale_t loc); int isdigit_l(int c, locale_t loc); int isgraph_l(int c, locale_t loc); int ishexnumber_l(int c, locale_t loc); int isideogram_l(int c, locale_t loc); int islower_l(int c, locale_t loc); int isnumber_l(int c, locale_t loc); int isphonogram_l(int c, locale_t loc); int isspecial_l(int c, locale_t loc); int isprint_l(int c, locale_t loc); int ispunct_l(int c, locale_t loc); int isrune_l(int c, locale_t loc); int isspace_l(int c, locale_t loc); int isupper_l(int c, locale_t loc); int isxdigit_l(int c, locale_t loc); int tolower_l(int c, locale_t loc); int toupper_l(int c, locale_t loc);
DESCRIPTION
The above functions perform character tests and conversions on the integer c 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. <ctype.h>, or as true functions in the C library. See the specific manual pages for more information.
SEE ALSO
digittoint(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), isideogram(3), islower(3), isphonogram(3), isprint(3), ispunct(3), isrune(3), isspace(3), isspecial(3), isupper(3), isxdigit(3), tolower(3), toupper(3), wctype(3), xlocale(3)
STANDARDS
These functions conform to IEEE Std 1003.1-2008 (``POSIX.1''), except for digittoint_l(), isascii_l(), ishexnumber_l(), isideogram_l(), isnumber_l(), isphonogram_l(), isrune_l() and isspecial_l() which are FreeBSD extensions.
BSD
March 6, 2012 BSD