POPCOUNT(3)
Library Functions Manual
POPCOUNT(3)
NAME
popcount
,
popcountl
,
popcountll
,
popcount32
,
popcount64
—
count number of bits set in a bit string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <
strings.h
>
unsigned int
popcount
(
unsigned int value
);
unsigned int
popcountl
(
unsigned long value
);
unsigned int
popcountll
(
unsigned long long value
);
unsigned int
popcount32
(
uint32_t value
);
unsigned int
popcount64
(
uint64_t value
);
DESCRIPTION
The
popcount
functions returns the number of bits set in
value
.
SEE ALSO
ffs(3)
HISTORY
The
popcount
(),
popcountl
(),
popcountll
(),
popcount32
(), and
popcount64
() functions appeared in
NetBSD 6.0
.
July 13, 2009
NetBSD 5.99