47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#ifndef BASE_MATH_H
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#define BASE_MATH_H
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//----------------------------------------------------------------
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namespace base {
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// Only works for integral types
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template <typename T>
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T div_up(T const &v, T const &divisor) {
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return (v + (divisor - 1)) / divisor;
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}
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// Seemingly pointless function, but it coerces the arguments
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// nicely.
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template <typename T>
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T div_down(T const &v, T const &divisor) {
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return v / divisor;
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}
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template <typename T>
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bool is_power_of_two(T const v) {
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return !(v & (v - 1));
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}
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}
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//----------------------------------------------------------------
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#endif
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