Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c
new file mode 100644
index 0000000..a5d2cdc
--- /dev/null
+++ b/lib/int_sqrt.c
@@ -0,0 +1,32 @@
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+/**
+ * int_sqrt - rough approximation to sqrt
+ * @x: integer of which to calculate the sqrt
+ *
+ * A very rough approximation to the sqrt() function.
+ */
+unsigned long int_sqrt(unsigned long x)
+{
+ unsigned long op, res, one;
+
+ op = x;
+ res = 0;
+
+ one = 1 << 30;
+ while (one > op)
+ one >>= 2;
+
+ while (one != 0) {
+ if (op >= res + one) {
+ op = op - (res + one);
+ res = res + 2 * one;
+ }
+ res /= 2;
+ one /= 4;
+ }
+ return res;
+}
+EXPORT_SYMBOL(int_sqrt);
