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

NAME
     isblank --	space or tab character test

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isblank(int c);

DESCRIPTION
     The isblank() function tests for a	space or tab character.	 For any lo-
     cale, this	includes the following standard	characters:

     ``\t''	 `` ''

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

RETURN VALUES
     The isblank() function returns zero if the	character tests	false and re-
     turns 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 ob-
     solete and	may not	be supported in	future releases.  The iswblank() func-
     tion should be used instead.

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

STANDARDS
     The isblank() function conforms to	ISO/IEC	9899:1999 ("ISO	C99").

BSD				August 21, 2004				   BSD

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

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