netbsd man page for isspace

ISSPACE(3)						   BSD Library Functions Manual 						ISSPACE(3)

NAME
     isspace -- white-space character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isspace(int c);

DESCRIPTION
     The isspace() function tests for the standard white-space characters for which isalnum(3) is false.  The standard white-space characters are
     the following:

	   ' '	  Space character.
	   f	  Form feed.
	   
	  New-line.
	   
	  Carriage return.
	   		  Horizontal tab.
	   v	  And vertical tab.

     In the ``C'' locale, isspace() returns true only for the standard white-space characters.

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

SEE ALSO
     ctype(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isupper(3),
     isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)

STANDARDS
     The isspace() function conforms to ANSI X3.159-1989 (``ANSI C89'').

CAVEATS
     The argument to isspace() must be EOF or representable as an unsigned char; otherwise, the behavior is undefined.	See the CAVEATS section of
     ctype(3) for more details.

BSD
								  April 17, 2008							       BSD