ISBLANK(3) BSD Library Functions Manual ISBLANK(3)

NAME
     iissbbllaannkk - space or tab character test

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     int
     iissbbllaannkk(int c);

DESCRIPTION
     The iissbbllaannkk() function tests for a space or tab character.  For any
     locale, this includes the following standard characters:

     ``\t''      `` ''

     In the "C" locale iissbbllaannkk() successful test is limited to this characters
     only.  For single C chars locales (see multibyte(3)) the value of the
     argument is representable as an unsigned char or the value of EOF.

CCOOMMPPAATTIIBBIILLIITTYY
     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 iisswwbbllaannkk()
     function should be used instead.

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

SEE ALSO
     ctype(3), iswblank(3), multibyte(3), ascii(7), isalnuml

STANDARDS     The iissbbllaannkk() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

BSD                             August 21, 2004                            BSD