48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* Copyright (C) 2000-2015 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
unsigned long
|
|
udivmodsi4(unsigned long num, unsigned long den, int modwanted)
|
|
{
|
|
unsigned long bit = 1;
|
|
unsigned long res = 0;
|
|
|
|
while (den < num && bit && !(den & (1L<<31)))
|
|
{
|
|
den <<=1;
|
|
bit <<=1;
|
|
}
|
|
while (bit)
|
|
{
|
|
if (num >= den)
|
|
{
|
|
num -= den;
|
|
res |= bit;
|
|
}
|
|
bit >>=1;
|
|
den >>=1;
|
|
}
|
|
if (modwanted) return num;
|
|
return res;
|
|
}
|