ISSPACE(3)                OpenBSD Programmer's Manual               ISSPACE(3)

NAME
     isspace - white-space character test



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.
           \n     New-line.
           \r     Carriage return.
           \t     Horizontal tab.
           \v     And vertical tab.

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

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

SEE ALSO
     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 C'').

OpenBSD 2.6                      July 31, 1991                               1