Linux Kernel  3.7.1
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lshrdi3.c
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1 #include <linux/module.h>
2 
3 #include "libgcc.h"
4 
5 long long __lshrdi3(long long u, word_type b)
6 {
7  DWunion uu, w;
8  word_type bm;
9 
10  if (b == 0)
11  return u;
12 
13  uu.ll = u;
14  bm = 32 - b;
15 
16  if (bm <= 0) {
17  w.s.high = 0;
18  w.s.low = (unsigned int) uu.s.high >> -bm;
19  } else {
20  const unsigned int carries = (unsigned int) uu.s.high << bm;
21 
22  w.s.high = (unsigned int) uu.s.high >> b;
23  w.s.low = ((unsigned int) uu.s.low >> b) | carries;
24  }
25 
26  return w.ll;
27 }
28