xref: /dflybsd-src/lib/libc/locale/ctype.3 (revision c66c7e2fb8d0d28477d550f1d2a50c4677d547ff)

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.\"     @(#)ctype.3	8.1 (Berkeley) 6/4/93
.\" $FreeBSD: head/lib/libc/locale/ctype.3 233648 2012-03-29 05:02:12Z eadler $
.\"
.Dd March 30, 2004
.Dt CTYPE 3
.Os
.Sh NAME
.Nm digittoint ,
.Nm isalnum ,
.Nm isalpha ,
.Nm isascii ,
.Nm isblank ,
.Nm iscntrl ,
.Nm isdigit ,
.Nm isgraph ,
.Nm ishexnumber ,
.Nm isideogram ,
.Nm islower ,
.Nm isnumber ,
.Nm isphonogram ,
.Nm isprint ,
.Nm ispunct ,
.Nm isrune ,
.Nm isspace ,
.Nm isspecial ,
.Nm isupper ,
.Nm isxdigit ,
.Nm toascii ,
.Nm tolower ,
.Nm toupper
.Nd character classification functions
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In ctype.h
.Ft int
.Fn digittoint "int c"
.Ft int
.Fn isalnum "int c"
.Ft int
.Fn isalpha "int c"
.Ft int
.Fn isascii "int c"
.Ft int
.Fn iscntrl "int c"
.Ft int
.Fn isdigit "int c"
.Ft int
.Fn isgraph "int c"
.Ft int
.Fn ishexnumber "int c"
.Ft int
.Fn isideogram "int c"
.Ft int
.Fn islower "int c"
.Ft int
.Fn isnumber "int c"
.Ft int
.Fn isphonogram "int c"
.Ft int
.Fn isspecial "int c"
.Ft int
.Fn isprint "int c"
.Ft int
.Fn ispunct "int c"
.Ft int
.Fn isrune "int c"
.Ft int
.Fn isspace "int c"
.Ft int
.Fn isupper "int c"
.Ft int
.Fn isxdigit "int c"
.Ft int
.Fn toascii "int c"
.Ft int
.Fn tolower "int c"
.Ft int
.Fn toupper "int c"
.Sh DESCRIPTION
The above functions perform character tests and conversions on the integer
.Fa c .
They are available as macros, defined in the include file
.In ctype.h ,
or as true functions in the C library.
See the specific manual pages for more information.
.Sh SEE ALSO
.Xr digittoint 3 ,
.Xr isalnum 3 ,
.Xr isalpha 3 ,
.Xr isascii 3 ,
.Xr isblank 3 ,
.Xr iscntrl 3 ,
.Xr isdigit 3 ,
.Xr isgraph 3 ,
.Xr isideogram 3 ,
.Xr islower 3 ,
.Xr isphonogram 3 ,
.Xr isprint 3 ,
.Xr ispunct 3 ,
.Xr isrune 3 ,
.Xr isspace 3 ,
.Xr isspecial 3 ,
.Xr isupper 3 ,
.Xr isxdigit 3 ,
.Xr toascii 3 ,
.Xr tolower 3 ,
.Xr toupper 3 ,
.Xr wctype 3 ,
.Xr ascii 7
.Sh STANDARDS
These functions, except for
.Fn digittoint ,
.Fn isascii ,
.Fn ishexnumber ,
.Fn isideogram ,
.Fn isnumber ,
.Fn isphonogram ,
.Fn isrune ,
.Fn isspecial
and
.Fn toascii ,
conform to
.St -isoC .