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<ctype.h>(P) POSIX Programmer's Manual <ctype.h>(P)
NAME
ctype.h - character types
SYNOPSIS
#include <ctype.h>
DESCRIPTION
Some of the functionality described on this reference page extends the
ISO C standard. Applications shall define the appropriate feature test
macro (see the System Interfaces volume of IEEE Std 1003.1-2001, Sec-
tion 2.2, The Compilation Environment) to enable the visibility of
these symbols in this header.
The following shall be declared as functions and may also be defined as
macros. Function prototypes shall be provided.
int isalnum(int);
int isalpha(int);
int isascii(int);
int isblank(int);
int iscntrl(int);
int isdigit(int);
int isgraph(int);
int islower(int);
int isprint(int);
int ispunct(int);
int isspace(int);
int isupper(int);
int isxdigit(int);
int toascii(int);
int tolower(int);
int toupper(int);
The following are defined as macros:
int _toupper(int);
int _tolower(int);
The following sections are informative.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
<locale.h> , the System Interfaces volume of IEEE Std 1003.1-2001,
isalnum(), isalpha(), isascii(), iscntrl(), isdigit(), isgraph(),
islower(), isprint(), ispunct(), isspace(), isupper(), isxdigit(),
mblen(), mbstowcs(), mbtowc(), setlocale(), toascii(), tolower(),
_tolower(), toupper(), _toupper(), wcstombs(), wctomb()
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 <ctype.h>(P)
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This page was generated on Sat Sep 8 16:41:09 GMT 2007
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