| /* Copyright (C) 2000-2021 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 short |
| __udivmodhi4(unsigned short num, unsigned short den, int modwanted) |
| { |
| unsigned short bit = 1; |
| unsigned short res = 0; |
| |
| while (den < num && bit && !(den & (1U<<15))) |
| { |
| den <<=1; |
| bit <<=1; |
| } |
| while (bit) |
| { |
| if (num >= den) |
| { |
| num -= den; |
| res |= bit; |
| } |
| bit >>=1; |
| den >>=1; |
| } |
| if (modwanted) return num; |
| return res; |
| } |