/usr/include/gecode/iter/ranges-negative.hpp is in libgecode-dev 3.7.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2008
*
* Last modified:
* $Date: 2010-07-28 17:35:33 +0200 (Wed, 28 Jul 2010) $ by $Author: schulte $
* $Revision: 11294 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <algorithm>
namespace Gecode { namespace Iter { namespace Ranges {
/**
* \brief Range iterator for negative part of a range iterator
*
* If \a strict is true, zero is excluded.
*
* \ingroup FuncIterRanges
*/
template<class I, bool strict=false>
class Negative {
protected:
/// Input iterator
I i;
public:
/// \name Constructors and initialization
//@{
/// Default constructor
Negative(void);
/// Initialize with ranges from \a i
Negative(I& i);
/// Initialize with ranges from \a i
void init(I& i);
//@}
/// \name Iteration control
//@{
/// Test whether iterator is still at a range or done
bool operator ()(void) const;
/// Move iterator to next range (if possible)
void operator ++(void);
//@}
/// \name Range access
//@{
/// Return smallest value of range
int min(void) const;
/// Return largest value of range
int max(void) const;
/// Return width of range (distance between minimum and maximum)
unsigned int width(void) const;
//@}
};
template<class I, bool strict>
forceinline
Negative<I,strict>::Negative(void) {}
template<class I, bool strict>
forceinline void
Negative<I,strict>::init(I& i0) {
i=i0;
}
template<class I, bool strict>
forceinline
Negative<I,strict>::Negative(I& i0) : i(i0) {}
template<class I, bool strict>
forceinline void
Negative<I,strict>::operator ++(void) {
++i;
}
template<class I, bool strict>
forceinline bool
Negative<I,strict>::operator ()(void) const {
if (strict) {
return i() && (i.min() < 0);
} else {
return i() && (i.min() <= 0);
}
}
template<class I, bool strict>
forceinline int
Negative<I,strict>::min(void) const {
return i.min();
}
template<class I, bool strict>
forceinline int
Negative<I,strict>::max(void) const {
if (strict) {
return std::min(i.max(),-1);
} else {
return std::min(i.max(),0);
}
}
template<class I, bool strict>
forceinline unsigned int
Negative<I,strict>::width(void) const {
return static_cast<unsigned int>(max()-min()+1);
}
}}}
// STATISTICS: iter-any
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