LXR linux/arch/h8300/lib/ashldi3.c

   1// SPDX-License-Identifier: GPL-2.0
   2#include "libgcc.h"
   3
   4DWtype
   5__ashldi3(DWtype u, word_type b)
   6{
   7        const DWunion uu = {.ll = u};
   8        const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
   9        DWunion w;
  10
  11        if (b == 0)
  12                return u;
  13
  14        if (bm <= 0) {
  15                w.s.low = 0;
  16                w.s.high = (UWtype) uu.s.low << -bm;
  17        } else {
  18                const UWtype carries = (UWtype) uu.s.low >> bm;
  19
  20                w.s.low = (UWtype) uu.s.low << b;
  21                w.s.high = ((UWtype) uu.s.high << b) | carries;
  22        }
  23
  24        return w.ll;
  25}
  26