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/*
FUNCTION
<<isblank>>---blank character predicate
INDEX
isblank
ANSI_SYNOPSIS
#include <ctype.h>
int isblank(int <[c]>);
TRAD_SYNOPSIS
#include <ctype.h>
int isblank(<[c]>);
DESCRIPTION
<<isblank>> is a macro which classifies ASCII integer values by table
lookup. It is a predicate returning non-zero for blank characters, and 0
for other characters.
You can use a compiled subroutine instead of the macro definition by
undefining the macro using `<<#undef isblank>>'.
RETURNS
<<isblank>> returns non-zero if <[c]> is a blank character.
*/
#include <_ansi.h>
#include <ctype.h>
#undef isblank
int
_DEFUN(isblank,(c),int c)
{
return (c == ' ' || c == '\t');
}
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