1 files changed, 101 insertions, 0 deletions
diff --git a/lib_nios2/divmod.c b/lib_nios2/divmod.c
new file mode 100644
index 0000000..3c7e71e
--- /dev/null
+++ b/lib_nios2/divmod.c
@@ -0,0 +1,101 @@
+/*
+ * This file is part of GNU CC.
+ *
+ * GNU CC 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 2, or (at your
+ * option) any later version.
+ *
+ * GNU CC 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.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with GNU CC; see the file COPYING.  If not, write
+ * to the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#include "math.h"
+
+USItype udivmodsi4 (USItype num, USItype den, word_type modwanted)
+{
+	USItype bit = 1;
+	USItype 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;
+}
+
+
+SItype __divsi3 (SItype a, SItype b)
+{
+	word_type neg = 0;
+	SItype res;
+
+	if (a < 0) {
+		a = -a;
+		neg = !neg;
+	}
+
+	if (b < 0) {
+		b = -b;
+		neg = !neg;
+	}
+
+	res = udivmodsi4 (a, b, 0);
+
+	if (neg)
+		res = -res;
+
+	return res;
+}
+
+
+SItype __modsi3 (SItype a, SItype b)
+{
+	word_type neg = 0;
+	SItype res;
+
+	if (a < 0) {
+		a = -a;
+		neg = 1;
+	}
+
+	if (b < 0)
+		b = -b;
+
+	res = udivmodsi4 (a, b, 1);
+
+	if (neg)
+		res = -res;
+
+	return res;
+}
+
+
+SItype __udivsi3 (SItype a, SItype b)
+{
+	return udivmodsi4 (a, b, 0);
+}
+
+
+SItype __umodsi3 (SItype a, SItype b)
+{
+	return udivmodsi4 (a, b, 1);
+}