The bitor macro, which is part of <iso646.h>, is a convenient object-like macro name that expands to the | operator. The macro was added in Normative Addendum 1 in an effort to provide support for international character sets that might not have the | symbols.

Synopsis

#include <iso646.h>
#define bitor |

Description

The bitor object-like macro expands to the | operator.

Example

#include <iso646.h>

int main ()
{
    if ((2 bitor 2) or (1 bitor 1))
        return 1;
    return 0;
}