diff options
Diffstat (limited to 'libgcc/udivmodsi4.c')
-rw-r--r-- | libgcc/udivmodsi4.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/libgcc/udivmodsi4.c b/libgcc/udivmodsi4.c new file mode 100644 index 0000000..39c030f --- /dev/null +++ b/libgcc/udivmodsi4.c @@ -0,0 +1,47 @@ +/* Copyright (C) 2000 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; +} |