/usr/include/libwildmagic/Wm5MinHeap.h is in libwildmagic-dev 5.13-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.0 (2010/01/01)
#ifndef WM5MINHEAP_H
#define WM5MINHEAP_H
#include "Wm5CoreLIB.h"
#include "Wm5Memory.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Generator, typename Scalar> class MinHeap;
//----------------------------------------------------------------------------
template <typename Generator, typename Scalar>
class MinHeapRecord
{
public:
// Construction and destruction.
MinHeapRecord ();
~MinHeapRecord ();
// Member access.
inline Generator GetGenerator () const;
inline Scalar GetValue () const;
inline int GetIndex () const;
private:
friend class MinHeap<Generator,Scalar>;
Generator mGenerator;
Scalar mValue;
int mIndex;
};
//----------------------------------------------------------------------------
template <typename Generator, typename Scalar>
class MinHeap
{
public:
// Construction and destruction.
MinHeap (int maxElements, int growBy, Scalar initialValue);
~MinHeap ();
// Member access.
inline int GetMaxElements () const;
inline int GetGrowBy () const;
inline int GetNumElements () const;
inline void GetMinimum (Generator& generator, Scalar& value) const;
inline const MinHeapRecord<Generator,Scalar>* GetRecord (int i) const;
// Insert into the heap the number 'value' that corresponds to the object
// identified by 'generator'. The return value is a pointer to the heap
// record storing the information.
const MinHeapRecord<Generator,Scalar>* Insert (Generator generator,
Scalar value);
// Remove the root of the heap. The root contains the minimum value of
// all heap elements. The root information is returned by the function's
// output parameters.
void Remove (Generator& generator, Scalar& value);
// The value of a heap record must be modified through this function call.
// The side effect is that the heap must be updated accordingly to
// accommodate the new value.
void Update (const MinHeapRecord<Generator,Scalar>* constRecord,
Scalar value);
// Support for debugging. The first two functions check wheter the array
// of records really do form a heap. The last function prints the heap
// to a file.
bool IsValid (int start, int final);
bool IsValid ();
void Print (const char* filename);
private:
// The actual record storage, allocated in one large chunk.
int mNumElements, mMaxElements, mGrowBy;
Scalar mInitialValue;
MinHeapRecord<Generator,Scalar>* mRecords;
// Pointers to the records in storage. The two-level system avoids the
// large number of allocations and deallocations that would occur if each
// element of m_apkRecord were to be allocated/deallocated individually.
MinHeapRecord<Generator,Scalar>** mRecordPointers;
};
#include "Wm5MinHeap.inl"
}
#endif
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