mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-23 14:52:24 +00:00
124 lines
2.8 KiB
C++
124 lines
2.8 KiB
C++
/*
|
|
* ZeroTier One - Global Peer to Peer Ethernet
|
|
* Copyright (C) 2012-2013 ZeroTier Networks LLC
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* --
|
|
*
|
|
* ZeroTier may be used and distributed under the terms of the GPLv3, which
|
|
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
|
|
*
|
|
* If you would like to embed ZeroTier into a commercial application or
|
|
* redistribute it in a modified binary form, please contact ZeroTier Networks
|
|
* LLC. Start here: http://www.zerotier.com/
|
|
*/
|
|
|
|
#ifndef _ZT_RANGE_HPP
|
|
#define _ZT_RANGE_HPP
|
|
|
|
namespace ZeroTier {
|
|
|
|
/**
|
|
* A range of numeric values
|
|
*
|
|
* @tparam T Type, can be any numeric value (int, float, double, etc.)
|
|
*/
|
|
template<typename T>
|
|
class Range
|
|
{
|
|
public:
|
|
/**
|
|
* Construct an empty range
|
|
*/
|
|
Range()
|
|
throw() :
|
|
start(0),
|
|
end(0)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* @param s Starting value (inclusive)
|
|
* @param e Ending value (exclusive)
|
|
*/
|
|
Range(T s,T e)
|
|
throw() :
|
|
start(s),
|
|
end(e)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Construct a range containing from n to n+1 (thus only n for integers)
|
|
*
|
|
* @param n Number to contain
|
|
*/
|
|
Range(T n)
|
|
throw() :
|
|
start(n),
|
|
end(n+1)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* @return end - start
|
|
*/
|
|
inline T magnitude() const
|
|
throw()
|
|
{
|
|
return (end - start);
|
|
}
|
|
|
|
/**
|
|
* @return True if range contains something (magnitude is nonzero)
|
|
*/
|
|
inline operator bool() const
|
|
throw()
|
|
{
|
|
return (end > start);
|
|
}
|
|
|
|
/**
|
|
* @param v Value to test
|
|
* @return True if value is between start (inclusive) and end (exclusive)
|
|
*/
|
|
inline bool operator()(const T &v) const
|
|
throw()
|
|
{
|
|
return ((v >= start)&&(v < end));
|
|
}
|
|
|
|
inline bool operator==(const Range &r) const throw() { return ((start == r.start)&&(end == r.end)); }
|
|
inline bool operator!=(const Range &r) const throw() { return (!(*this == r)); }
|
|
inline bool operator<(const Range &r) const throw() { return ((start < r.start) ? true : ((start == r.start) ? (end < r.end) : false)); }
|
|
inline bool operator>(const Range &r) const throw() { return (r < *this); }
|
|
inline bool operator<=(const Range &r) const throw() { return !(r < *this); }
|
|
inline bool operator>=(const Range &r) const throw() { return !(*this < r); }
|
|
|
|
/**
|
|
* Start of range (may be modified directly)
|
|
*/
|
|
T start;
|
|
|
|
/**
|
|
* End of range (may be modified directly)
|
|
*/
|
|
T end;
|
|
};
|
|
|
|
} // namespace ZeroTier
|
|
|
|
#endif
|