NL_CTYPE(3C)

NAME

nl_isalpha, nl_isupper, nl_islower, nl_isalnum, nl_ispunct, nl_isprint, nl_isgraph − classify characters for use with NLS

SYNOPSIS

#include <nl_ctype.h>

int nl_isalpha (c, langid)
int c; int langid;

. . .

HP-UX COMPATIBILITY

Level: HP-UX/RUN ONLY

Origin: HP

Native Language Support:
8−bit data, customs, messages

DESCRIPTION

These routines classify character-coded integer values by table lookup. Langid is as defined in langid(7). Each is a predicate returning non-zero for true, zero for false. All are defined for the range -1 to 255. If langid is not defined, or if type information for that language is not installed, isalpha, isupper, etc. will be used, returning 0 for values above octal 0200.

nl_isalpha c is a letter.

nl_isupper c is an upper-case letter.

nl_islower c is a lower-case letter.

nl_isalnum c is an alphanumeric (letter or digit).

nl_ispunct c is a punctuation character (neither control nor alphanumeric).

nl_isprint c is a printing character.

nl_isgraph c is a printing character, like nl_isprint except false for space.

DIAGNOSTICS

If the argument to any of these is not in the domain of the function, the result is undefined.

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