ctype.h File Reference

Critical sections support. More...

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Functions
static int	isspace (int c)
	Check for white-space characters. These are: space, form-feed ('\f'), newline ('\n'), carriage return ('\r'), horizontal tab ('\t'), and vertical tab ('\v'). More...
static int	isascii (int c)
	Check whether c is a 7-bit unsigned char value that fits into the ASCII character set. More...
static int	isupper (int c)
	Check for an uppercase letter. More...
static int	islower (int c)
	Check for an lowercase letter. More...
static int	isalpha (int c)
	Check for an alphabetic character; it is equivalent to (isupper(c) || islower(c)) More...
static int	isdigit (int c)
	Check for a digit (0 through 9) More...
static int	isalnum (int c)
	Check for an alphanumeric character; it is equivalent to (isalpha(c) || isdigit(c)). More...
static int	isblank (int c)
	Check for a blank character; that is, a space or a tab. More...
static int	isxdigit (int c)
	Check for hexadecimal digits, that is, one of 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F. More...
static int	isprint (int c)
	Check for any printable character including space. More...
static int	isgraph (int c)
	Check for any printable character except space. More...
static int	ispunct (int c)
	Check for any printable character which is not a space or an alphanumeric character. More...
static int	iscntrl (int c)
	Check for a control character. More...
static int	toupper (int c)
	Convert lowercase letter to uppercase. More...
static int	tolower (int c)
	Convert uppercase letter to lowercase. More...

Detailed Description

Critical sections support.

Copyright

Copyright (c) 1982, 1988, 1991, 1993 The Regents of the University of California. All rights reserved. (c) UNIX System Laboratories, Inc. Portions copyright (c) 2009-2014, ARM Limited and Contributors.