create a separate unit-tests dir

endian_utils.cc

@@ -0,0 +1,46 @@
+#include "endian_utils.h"
+
+using namespace base;
+
+//----------------------------------------------------------------
+
+bool
+base::test_bit_le(void const *bits, unsigned b)
+{
+	__le64 const *w = reinterpret_cast<__le64 const *>(bits);
+        w += b / 64;
+
+        uint64_t v = to_cpu<uint64_t>(*w);
+        uint64_t mask = 1;
+        mask = mask << (b % 64);
+        return (v & mask) ? true : false;
+}
+
+void
+base::set_bit_le(void *bits, unsigned b)
+{
+	__le64 *w = reinterpret_cast<__le64 *>(bits);
+	w += b / 64;
+
+	uint64_t v = to_cpu<uint64_t>(*w);
+	uint64_t mask = 1;
+	mask = mask << (b % 64);
+	v |= mask;
+	*w = to_disk<__le64>(v);
+}
+
+void
+base::clear_bit_le(void *bits, unsigned b)
+{
+	__le64 *w = reinterpret_cast<__le64 *>(bits);
+	w += b / 64;
+
+	uint64_t v = to_cpu<uint64_t>(*w);
+	uint64_t mask = 1;
+	mask = mask << (b % 64);
+	mask = ~mask;
+	v &= mask;
+	*w = to_disk<__le64>(v);
+}
+
+//----------------------------------------------------------------