Staging
v0.7.0
https://github.com/torvalds/linux
Raw File
Tip revision: 20f4d6c3a2a23c5d7d9cc7f42fbb943ca7a03d1f authored by Linus Torvalds on 23 February 2009, 04:19:40 UTC
Linux 2.6.29-rc6
Tip revision: 20f4d6c
lshrdi3.c
#include <linux/module.h>

#include "libgcc.h"

long long __lshrdi3(long long u, word_type b)
{
	DWunion uu, w;
	word_type bm;

	if (b == 0)
		return u;

	uu.ll = u;
	bm = 32 - b;

	if (bm <= 0) {
		w.s.high = 0;
		w.s.low = (unsigned int) uu.s.high >> -bm;
	} else {
		const unsigned int carries = (unsigned int) uu.s.high << bm;

		w.s.high = (unsigned int) uu.s.high >> b;
		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
	}

	return w.ll;
}

EXPORT_SYMBOL(__lshrdi3);
back to top