aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/libgcc/udivmodsi4.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.9/libgcc/udivmodsi4.c')
-rw-r--r--gcc-4.9/libgcc/udivmodsi4.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/udivmodsi4.c b/gcc-4.9/libgcc/udivmodsi4.c
new file mode 100644
index 000000000..f581e5344
--- /dev/null
+++ b/gcc-4.9/libgcc/udivmodsi4.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 2000-2014 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;
+}