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CTYPE(3) |
FreeBSD Library Functions Manual |
CTYPE(3) |
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 functions
Standard C Library (libc, -lc)
#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);
The above functions perform character tests and conversions on the integer
c. They are available as macros, defined in
the include file
<ctype.h> ,
or as true functions in the C library. See the specific manual pages for more
information.
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)
These functions, except for digittoint (),
isascii (),
ishexnumber (),
isideogram (),
isnumber (),
isphonogram (),
isrune (),
isspecial () and
toascii (), conform to
ISO/IEC 9899:1990
(“ISO C90”).
Visit the GSP FreeBSD Man Page Interface. Output converted with ManDoc.
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