Move source into separate sub directories.

persistent-data/math_utils.h

@@ -0,0 +1,41 @@
+// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools 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 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools 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 thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef THINP_MATH_H
+#define THINP_MATH_H
+
+//----------------------------------------------------------------
+
+namespace base {
+	// Only works for integral types
+	template <typename T>
+	T div_up(T const &v, T const &divisor) {
+		return (v + (divisor - 1)) / divisor;
+	}
+
+	// Seemingly pointless function, but it coerces the arguments
+	// nicely.
+	template <typename T>
+	T div_down(T const &v, T const &divisor) {
+		return v / divisor;
+	}
+}
+
+//----------------------------------------------------------------
+
+#endif