#include <linux/export.h>
#include <linux/bitops.h>
#include <asm/types.h>

/**
 * hweightN - returns the hamming weight of a N-bit word
 * @x: the word to weigh
 *
 * The Hamming Weight of a number is the total number of bits set in it.
 */

#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned int __sw_hweight32(unsigned int w)
{
#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
	w -= (w >> 1) & 0x55555555;
	w =  (w & 0x33333333) + ((w >> 2) & 0x33333333);
	w =  (w + (w >> 4)) & 0x0f0f0f0f;
	return (w * 0x01010101) >> 24;
#else
	unsigned int res = w - ((w >> 1) & 0x55555555);
	res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
	res = (res + (res >> 4)) & 0x0F0F0F0F;
	res = res + (res >> 8);
	return (res + (res >> 16)) & 0x000000FF;
#endif
}
EXPORT_SYMBOL(__sw_hweight32);
#endif

unsigned int __sw_hweight16(unsigned int w)
{
	unsigned int res = w - ((w >> 1) & 0x5555);
	res = (res & 0x3333) + ((res >> 2) & 0x3333);
	res = (res + (res >> 4)) & 0x0F0F;
	return (res + (res >> 8)) & 0x00FF;
}
EXPORT_SYMBOL(__sw_hweight16);

unsigned int __sw_hweight8(unsigned int w)
{
	unsigned int res = w - ((w >> 1) & 0x55);
	res = (res & 0x33) + ((res >> 2) & 0x33);
	return (res + (res >> 4)) & 0x0F;
}
EXPORT_SYMBOL(__sw_hweight8);

#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned long __sw_hweight64(__u64 w)
{
#if BITS_PER_LONG == 32
	return __sw_hweight32((unsigned int)(w >> 32)) +
	       __sw_hweight32((unsigned int)w);
#elif BITS_PER_LONG == 64
#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
	w -= (w >> 1) & 0x5555555555555555ul;
	w =  (w & 0x3333333333333333ul) + ((w >> 2) & 0x3333333333333333ul);
	w =  (w + (w >> 4)) & 0x0f0f0f0f0f0f0f0ful;
	return (w * 0x0101010101010101ul) >> 56;
#else
	__u64 res = w - ((w >> 1) & 0x5555555555555555ul);
	res = (res & 0x3333333333333333ul) + ((res >> 2) & 0x3333333333333333ul);
	res = (res + (res >> 4)) & 0x0F0F0F0F0F0F0F0Ful;
	res = res + (res >> 8);
	res = res + (res >> 16);
	return (res + (res >> 32)) & 0x00000000000000FFul;
#endif
#endif
}
EXPORT_SYMBOL(__sw_hweight64);
#endif
ib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/lib/vsprintf.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/lib?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>lib</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>vsprintf.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='2c5d9555d6d937966d79d4c6529a5f7b9206e405'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>2c5d9555d6d937966d79d4c6529a5f7b9206e405</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>4f3d220ea3aeaadcae0796c5456e0ef9a908071d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>tools/lib/vsprintf.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/lib/vsprintf.c?id=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>53cd1ad1a68fd10f677445e04ed63aa9ce39b36b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/lib/vsprintf.c?id=2ad5d52d42810bed95100a3d912679d8864421ec'>2ad5d52d42810bed95100a3d912679d8864421ec</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/lib/vsprintf.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=2ad5d52d42810bed95100a3d912679d8864421ec'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux</div><div class='commit-msg'>Pull two parisc fixes from Helge Deller:
 "One fix to avoid usage of BITS_PER_LONG in user-space exported swab.h
  header which breaks compiling qemu, and one trivial fix for printk
  continuation in the parisc parport driver"

* 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
  parisc, parport_gsc: Fixes for printk continuation lines
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>Diffstat</a> (limited to 'tools/lib/vsprintf.c')</div><table summary='diffstat' class='diffstat'>