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123 lines
2.8 KiB
123 lines
2.8 KiB
/* |
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* ZeroTier One - Global Peer to Peer Ethernet |
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* Copyright (C) 2012-2013 ZeroTier Networks LLC |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* 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 |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* -- |
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* |
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* ZeroTier may be used and distributed under the terms of the GPLv3, which |
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html |
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* |
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* If you would like to embed ZeroTier into a commercial application or |
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* redistribute it in a modified binary form, please contact ZeroTier Networks |
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* LLC. Start here: http://www.zerotier.com/ |
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*/ |
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#ifndef _ZT_RANGE_HPP |
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#define _ZT_RANGE_HPP |
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namespace ZeroTier { |
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/** |
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* A range of numeric values |
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* |
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* @tparam T Type, can be any numeric value (int, float, double, etc.) |
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*/ |
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template<typename T> |
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class Range |
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{ |
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public: |
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/** |
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* Construct an empty range |
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*/ |
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Range() |
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throw() : |
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start(0), |
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end(0) |
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{ |
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} |
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/** |
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* @param s Starting value (inclusive) |
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* @param e Ending value (exclusive) |
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*/ |
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Range(T s,T e) |
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throw() : |
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start(s), |
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end(e) |
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{ |
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} |
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/** |
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* Construct a range containing from n to n+1 (thus only n for integers) |
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* |
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* @param n Number to contain |
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*/ |
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Range(T n) |
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throw() : |
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start(n), |
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end(n+1) |
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{ |
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} |
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/** |
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* @return end - start |
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*/ |
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inline T magnitude() const |
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throw() |
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{ |
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return (end - start); |
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} |
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/** |
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* @return True if range contains something (magnitude is nonzero) |
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*/ |
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inline operator bool() const |
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throw() |
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{ |
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return (end > start); |
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} |
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/** |
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* @param v Value to test |
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* @return True if value is between start (inclusive) and end (exclusive) |
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*/ |
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inline bool operator()(const T &v) const |
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throw() |
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{ |
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return ((v >= start)&&(v < end)); |
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} |
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inline bool operator==(const Range &r) const throw() { return ((start == r.start)&&(end == r.end)); } |
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inline bool operator!=(const Range &r) const throw() { return (!(*this == r)); } |
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inline bool operator<(const Range &r) const throw() { return ((start < r.start) ? true : ((start == r.start) ? (end < r.end) : false)); } |
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inline bool operator>(const Range &r) const throw() { return (r < *this); } |
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inline bool operator<=(const Range &r) const throw() { return !(r < *this); } |
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inline bool operator>=(const Range &r) const throw() { return !(*this < r); } |
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/** |
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* Start of range (may be modified directly) |
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*/ |
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T start; |
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/** |
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* End of range (may be modified directly) |
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*/ |
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T end; |
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}; |
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} // namespace ZeroTier |
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#endif
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