LXR linux/arch/mips/lib/lshrdi3.c

   1#include <linux/module.h>
   2
   3#include "libgcc.h"
   4
   5long 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
  29EXPORT_SYMBOL(__lshrdi3);
  30