ctype(3) BSD Library Functions Manual ctype(3)
NAME
digittoint, isalnum, isalpha, isascii, isblank, iscntrl, isdigit,
isgraph, ishexnumber, isideogram, islower, isnumber, isphonogram,
isprint, ispunct, isrune, isspace, isspecial, isupper, isxdigit, toascii,
tolower, toupper -- character classification macros
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h>
int
digittoint(int c);
int
isalnum(int c);
int
isalpha(int c);
int
isascii(int c);
int
iscntrl(int c);
int
isdigit(int c);
int
isgraph(int c);
int
ishexnumber(int c);
int
isideogram(int c);
int
islower(int c);
int
isnumber(int c);
int
isphonogram(int c);
int
isspecial(int c);
int
isprint(int c);
int
ispunct(int c);
int
isrune(int c);
int
isspace(int c);
int
isupper(int c);
int
isxdigit(int c);
int
toascii(int c);
int
tolower(int c);
int
toupper(int c);
DESCRIPTION
The above functions perform character tests and conversions on the inte-
ger c. They are available as macros, defined in the include file
<ctype.h>, or as true functions in the C library. See the specific man-
ual pages for more information.
Extended locale versions of these functions are documented in ctype_l(3).
See xlocale(3) 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), toascii(3), tolower(3),
toupper(3), wctype(3), ascii(7), ctype_l(3)
STANDARDS
These functions, except for digittoint(), isascii(), ishexnumber(),
isideogram(), isnumber(), isphonogram(), isrune(), isspecial() and
toascii(), conform to ISO/IEC 9899:1990 (``ISO C90'').
BSD March 30, 2004 BSD
Mac OS X 10.6 - Generated Thu Sep 17 20:19:03 CDT 2009