usual/ctype.h File Reference

ctype compat. More...

Defines
#define	isblank
	Safe isblank.
#define	isalnum
	Safe isalnum.
#define	isalpha
	Safe isalpha.
#define	isascii
	Safe isascii.
#define	isblank
	Safe isblank.
#define	iscntrl
	Safe iscntrl.
#define	isdigit
	Safe isdigit.
#define	isgraph
	Safe isgraph.
#define	islower
	Safe islower.
#define	isprint
	Safe isprint.
#define	ispunct
	Safe ispunct.
#define	isspace
	Safe isspace.
#define	isupper
	Safe isupper.
#define	isxdigit
	Safe isxdigit.
#define	tolower
	Safe tolower.
#define	toupper
	Safe toupper.

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Detailed Description

ctype compat.

Provides wrappers that make sure the functions work on 'char' values.

Note:

POSIX requires that these functions accept EOF/-1 in addition to ordinary byte values. That means when working on 'char', the functions cannot differetiate between 0xFF and EOF. As no code should give EOF to <ctype.h> functions and no code should depend whether 0xFF is labeled ispunct() or not, it seems no worthwhile to fix it.

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Define Documentation

#define isblank

Safe isblank.

#define isalnum

Safe isalnum.

#define isalpha

Safe isalpha.

#define isascii

Safe isascii.

#define isblank

Safe isblank.

#define iscntrl

Safe iscntrl.

#define isdigit

Safe isdigit.

#define isgraph

Safe isgraph.

#define islower

Safe islower.

#define isprint

Safe isprint.

#define ispunct

Safe ispunct.

#define isspace

Safe isspace.

#define isupper

Safe isupper.

#define isxdigit

Safe isxdigit.

#define tolower

Safe tolower.

#define toupper

Safe toupper.