freebsd man page for ispunct

ISPUNCT(3)						   BSD Library Functions Manual 						ISPUNCT(3)

NAME
     ispunct -- punctuation character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     ispunct(int c);

     int
     ispunct_l(int c, locale_t loc);

DESCRIPTION
     The ispunct() function tests for any printing character except for space (' ') or a character for which isalnum(3) is true.  The value of the
     argument must be representable as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

     041 ``!''	   042 ``"''	 043 ``#''     044 ``$''     045 ``%''
     046 ``&''	   047 ``'''	 050 ``(''     051 ``)''     052 ``*''
     053 ``+''	   054 ``,''	 055 ``-''     056 ``.''     057 ``/''
     072 ``:''	   073 ``;''	 074 ``<''     075 ``=''     076 ``>''
     077 ``?''	   100 ``@''	 133 ``[''     134 ``''     135 ``]''
     136 ``^''	   137 ``_''	 140 ```''     173 ``{''     174 ``|''
     175 ``}''	   176 ``~''

     The ispunct_l() function takes an explicit locale argument, whereas the ispunct() function uses the current global or per-thread locale.

RETURN VALUES
     The ispunct() and ispunct_l() functions return zero if the character tests false and return non-zero if the character tests true.

COMPATIBILITY
     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswpunct() function should be used instead.

SEE ALSO
     ctype(3), iswpunct(3), ascii(7)

STANDARDS
     The ispunct() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The ispunct_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD
								   July 30, 2012							       BSD