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ISXDIGIT(3)		 BSD Library Functions Manual		   ISXDIGIT(3)

NAME
     isxdigit, ishexnumber -- hexadecimal-digit	character test

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isxdigit(int c);

     int
     ishexnumber(int c);

DESCRIPTION
     The isxdigit() function tests for any hexadecimal-digit character.	 For
     any locale, this includes the following characters	only:

     ``0''	   ``1''	 ``2''	       ``3''	     ``4''
     ``5''	   ``6''	 ``7''	       ``8''	     ``9''
     ``A''	   ``B''	 ``C''	       ``D''	     ``E''
     ``F''	   ``a''	 ``b''	       ``c''	     ``d''
     ``e''	   ``f''

     For single	C chars	locales	(see multibyte(3)) the value of	the argument
     is	representable as an unsigned char or the value of EOF.

RETURN VALUES
     The isxdigit() function returns zero if the character tests false and re-
     turns non-zero if the character tests true.

COMPATIBILITY
     Although isxdigit() and ishexnumber() accept arguments outside of the
     range of the unsigned char	type in	locales	with large character sets,
     this is a 4.4BSD extension	and the	isxwdigit() and	iswhexnumber() func-
     tions should be used instead for maximum portability.

SEE ALSO
     ctype(3), iswxdigit(3), multibyte(3), ascii(7)

STANDARDS
     The isxdigit() function conforms to ISO/IEC 9899:1990 ("ISO C90").

BSD				October	6, 2002				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | COMPATIBILITY | SEE ALSO | STANDARDS

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