NAME

SET — primitive bit macros

SYNOPSIS

#include <sys/types.h>

void
SET(val, x);

void
ISSET(val, x);

void
CLR(val, x);

DESCRIPTION

These macros define three standard bit-operations:

1. SET() sets the bit x in val;
2. CLR() clears the bit x in val; and
3. ISSET() returns 1 if the bit x is set in val.

SEE ALSO

bits(3)

BUGS

The rationale is to provide clarity in the source code, but arguably these operations are clear enough without the use of the macros.