LXR linux/arch/h8300/lib/lshrdi3.c

   1// SPDX-License-Identifier: GPL-2.0
   2#include "libgcc.h"
   3
   4DWtype __lshrdi3(DWtype u, word_type b)
   5{
   6        const DWunion uu = {.ll = u};
   7        const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
   8        DWunion w;
   9
  10        if (b == 0)
  11                return u;
  12
  13        if (bm <= 0) {
  14                w.s.high = 0;
  15                w.s.low = (UWtype) uu.s.high >> -bm;
  16        } else {
  17                const UWtype carries = (UWtype) uu.s.high << bm;
  18
  19                w.s.high = (UWtype) uu.s.high >> b;
  20                w.s.low = ((UWtype) uu.s.low >> b) | carries;
  21        }
  22
  23        return w.ll;
  24}
  25