/*
 * lib/clz_ctz.c
 *
 * Copyright (C) 2013 Chanho Min <chanho.min@lge.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 * The functions in this file aren't called directly, but are required by
 * GCC builtins such as __builtin_ctz, and therefore they can't be removed
 * despite appearing unreferenced in kernel source.
 *
 * __c[lt]z[sd]i2 can be overridden by linking arch-specific versions.
 */

#include <linux/export.h>
#include <linux/kernel.h>

int __weak __ctzsi2(int val);
int __weak __ctzsi2(int val)
{
	return __ffs(val);
}
EXPORT_SYMBOL(__ctzsi2);

int __weak __clzsi2(int val);
int __weak __clzsi2(int val)
{
	return 32 - fls(val);
}
EXPORT_SYMBOL(__clzsi2);

int __weak __clzdi2(long val);
int __weak __ctzdi2(long val);
#if BITS_PER_LONG == 32

int __weak __clzdi2(long val)
{
	return 32 - fls((int)val);
}
EXPORT_SYMBOL(__clzdi2);

int __weak __ctzdi2(long val)
{
	return __ffs((u32)val);
}
EXPORT_SYMBOL(__ctzdi2);

#elif BITS_PER_LONG == 64

int __weak __clzdi2(long val)
{
	return 64 - fls64((u64)val);
}
EXPORT_SYMBOL(__clzdi2);

int __weak __ctzdi2(long val)
{
	return __ffs64((u64)val);
}
EXPORT_SYMBOL(__ctzdi2);

#else
#error BITS_PER_LONG not 32 or 64
#endif
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>Documentation</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='8e826ad52b751ca34d5153533f4f58ec38cf4799'/><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>Luis R. Rodriguez &lt;mcgrof@kernel.org&gt;</td><td class='right'>2016-06-29 15:14:52 -0700</td></tr>
<tr><th>committer</th><td>Michal Marek &lt;mmarek@suse.com&gt;</td><td class='right'>2016-07-22 12:13:39 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>8e826ad52b751ca34d5153533f4f58ec38cf4799</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>8208174d1b04f2f521da280d1785a0cad75e5ccb</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=13d948653372987388a09c259758abd44ed6e7f2'>13d948653372987388a09c259758abd44ed6e7f2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=8e826ad52b751ca34d5153533f4f58ec38cf4799&amp;id2=13d948653372987388a09c259758abd44ed6e7f2'>diff</a>)</td></tr></table>
<div class='commit-subject'>coccicheck: make SPFLAGS more useful</div><div class='commit-msg'>SPFLAGS is set early, it means that any heuristics done on
coccicheck cannot be overridden currently. Move SPFLAGS
after OPTIONS and set this at the end. This lets you override
any heuristics as coccinelle treats conflicts by only listening
to the last option that makes sense.

v3: this patch was added in the v3 series
v4: Update Documentation/coccinelle.txt explaining how
    SPFLAGS works as well.

Signed-off-by: Luis R. Rodriguez &lt;mcgrof@kernel.org&gt;
Acked-by: Nicolas Palix &lt;nicolas.palix@imag.fr&gt;
Signed-off-by: Michal Marek &lt;mmarek@suse.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=8e826ad52b751ca34d5153533f4f58ec38cf4799'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>