isblank man page on Minix

isblank man page on Minix

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

NAME
     isblank — blank-space character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isblank(int c);

DESCRIPTION
     The isblank() function tests for the standard blank-space characters.
     The standard blank-space characters are the following:

	   ‘ ’	  Space character.
	   \t	  Horizontal tab.

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

RETURN VALUES
     The isblank() 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), iscntrl(3), isdigit(3),
     isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3),
     isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)

CAVEATS
     The argument to isblank() 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

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