| ISBLANK(3) | Library Functions Manual | ISBLANK(3) | 
isblank —
#include <ctype.h>
int
  
  isblank(int
    c);
isblank() function tests for the standard
  blank-space characters. The standard blank-space characters are the following:
\tIn the ``C'' locale,
    isblank() returns true only for the standard
    blank-space characters.
isblank() function returns zero if the character
  tests false and returns non-zero if the character tests true.
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.
| April 17, 2008 | NetBSD 10.0 |