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https://github.com/NGSolve/netgen.git
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813 lines
18 KiB
C++
813 lines
18 KiB
C++
#ifndef NGARRAY_HPP_INCLUDED
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#define NGARRAY_HPP_INCLUDED
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/**************************************************************************/
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/* File: ngarray.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: 01. Jun. 95 */
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/**************************************************************************/
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namespace netgen
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{
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// template <class T, int B1, int B2> class IndirectArray;
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template <class TA1, class TA2> class IndirectArray;
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template <typename TSIZE>
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class ArrayRangeIterator
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{
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TSIZE ind;
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public:
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ArrayRangeIterator (TSIZE ai) : ind(ai) { ; }
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ArrayRangeIterator operator++ (int) { return ind++; }
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ArrayRangeIterator operator++ () { return ++ind; }
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TSIZE operator*() const { return ind; }
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bool operator != (ArrayRangeIterator d2) { return ind != d2.ind; }
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};
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/// a range of integers
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template <typename T>
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class T_Range
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{
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T first, next;
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public:
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T_Range (T f, T n) : first(f), next(n) {;}
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T Size() const { return next-first; }
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T operator[] (T i) const { return first+i; }
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bool Contains (T i) const { return ((i >= first) && (i < next)); }
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T_Range Modify (int inc_begin, int inc_end) const
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{ return T_Range(first+inc_begin, next+inc_end); }
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ArrayRangeIterator<T> begin() const { return first; }
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ArrayRangeIterator<T> end() const { return next; }
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};
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template <typename T, int BASE = 0, typename TIND = int>
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class NgFlatArray;
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template <typename T, int BASE, typename TIND>
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class ArrayIterator
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{
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NgFlatArray<T,BASE,TIND> ar;
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TIND ind;
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public:
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ArrayIterator (NgFlatArray<T,BASE,TIND> aar, TIND ai) : ar(aar), ind(ai) { ; }
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ArrayIterator operator++ (int) { return ArrayIterator(ar, ind++); }
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ArrayIterator operator++ () { return ArrayIterator(ar, ++ind); }
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T operator*() const { return ar[ind]; }
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T & operator*() { return ar[ind]; }
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bool operator != (ArrayIterator d2) { return ind != d2.ind; }
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bool operator == (ArrayIterator d2) { return ind == d2.ind; }
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};
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/**
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A simple array container.
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NgArray represented by size and data-pointer.
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No memory allocation and deallocation, must be provided by user.
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Helper functions for printing.
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Optional range check by macro RANGE_CHECK
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*/
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template <typename T, int BASE, typename TIND>
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class NgFlatArray
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{
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protected:
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/// the size
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size_t size;
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/// the data
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T * data;
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public:
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typedef T TELEM;
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using index_type = TIND;
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/// provide size and memory
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NgFlatArray (size_t asize, T * adata)
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: size(asize), data(adata) { ; }
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/// the size
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size_t Size() const { return size; }
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ArrayIterator<T,BASE,TIND> begin() const
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{ return ArrayIterator<T,BASE,TIND> (*this, BASE); }
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ArrayIterator<T,BASE,TIND> end() const
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{ return ArrayIterator<T,BASE,TIND> (*this, BASE+size); }
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// TIND Begin() const { return TIND(BASE); }
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// TIND End() const { return TIND(size+BASE); }
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T_Range<TIND> Range() const { return T_Range<TIND>(BASE, size+BASE); }
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[[deprecated("Use *Range().begin() instead")]]
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auto Begin() const { return *Range().begin(); }
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[[deprecated("Use *Range().end() instead")]]
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auto End() const { return *Range().end(); }
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/// Access array. BASE-based
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T & operator[] (TIND i) const
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{
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#ifdef DEBUG
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if (i-BASE < 0 || i-BASE >= size)
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cout << "array<" << typeid(T).name() << "> out of range, i = " << i << ", s = " << size << endl;
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#endif
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return data[i-BASE];
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}
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template <typename T2, int B2>
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IndirectArray<NgFlatArray, NgFlatArray<T2,B2> > operator[] (const NgFlatArray<T2,B2> & ia) const
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{
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return IndirectArray<NgFlatArray, NgFlatArray<T2,B2> > (*this, ia);
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}
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/// Access array, one-based (old fashioned)
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T & Elem (int i)
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "NgArray<" << typeid(T).name()
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<< ">::Elem out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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return ((T*)data)[i-1];
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}
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/// Access array, one-based (old fashioned)
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// [[deprecated("Use operator[] instead")]]
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const T & Get (int i) const
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "NgArray<" << typeid(T).name() << ">::Get out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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return ((const T*)data)[i-1];
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}
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/// Access array, one-based (old fashioned)
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void Set (int i, const T & el)
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "NgArray<" << typeid(T).name() << ">::Set out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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((T*)data)[i-1] = el;
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}
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/// access first element
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T & First () const
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{
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return data[0];
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}
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/// access last element. check by macro CHECK_RANGE
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T & Last () const
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{
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return data[size-1];
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}
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/// Fill array with value val
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NgFlatArray & operator= (const T & val)
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{
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for (int i = 0; i < size; i++)
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data[i] = val;
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return *this;
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}
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/// takes range starting from position start of end-start elements
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const NgFlatArray<T> Range (TIND start, TIND end)
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{
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return NgFlatArray<T> (end-start, data+start);
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}
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/// first position of element elem, returns -1 if element not contained in array
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TIND Pos(const T & elem) const
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{
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TIND pos = -1;
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for(TIND i=0; pos==-1 && i < this->size; i++)
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if(elem == data[i]) pos = i;
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return pos;
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}
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/// does the array contain element elem ?
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bool Contains(const T & elem) const
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{
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return ( Pos(elem) >= 0 );
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}
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};
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// print array
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template <typename T, int BASE, typename TIND>
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inline ostream & operator<< (ostream & s, const NgFlatArray<T,BASE,TIND> & a)
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{
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// for (TIND i = a.Begin(); i < a.End(); i++)
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for (auto i : a.Range())
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s << i << ": " << a[i] << endl;
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return s;
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}
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/**
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Dynamic array container.
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NgArray<T> is an automatically increasing array container.
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The allocated memory doubles on overflow.
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Either the container takes care of memory allocation and deallocation,
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or the user provides one block of data.
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*/
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template <class T, int BASE = 0, typename TIND = int>
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class NgArray : public NgFlatArray<T, BASE, TIND>
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{
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protected:
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using NgFlatArray<T,BASE,TIND>::size;
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using NgFlatArray<T,BASE,TIND>::data;
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/// physical size of array
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size_t allocsize;
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/// memory is responsibility of container
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bool ownmem;
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public:
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/// Generate array of logical and physical size asize
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explicit NgArray()
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: NgFlatArray<T, BASE, TIND> (0, NULL)
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{
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allocsize = 0;
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ownmem = 1;
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}
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explicit NgArray(size_t asize)
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: NgFlatArray<T, BASE, TIND> (asize, asize ? new T[asize] : nullptr)
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{
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allocsize = asize;
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ownmem = (asize == 0) ? 0 : 1;
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}
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/// Generate array in user data
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NgArray(TIND asize, T* adata)
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: NgFlatArray<T, BASE, TIND> (asize, adata)
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{
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allocsize = asize;
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ownmem = 0;
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}
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/// array copy
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explicit NgArray (const NgArray<T,BASE,TIND> & a2)
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: NgFlatArray<T, BASE, TIND> (a2.Size(), a2.Size() ? new T[a2.Size()] : 0)
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{
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allocsize = size;
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ownmem = 1;
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for (TIND i = BASE; i < size+BASE; i++)
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(*this)[i] = a2[i];
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}
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/// array move
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NgArray (NgArray && a2)
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: NgFlatArray<T,BASE,TIND> (a2.size, a2.data), allocsize(a2.allocsize), ownmem(a2.ownmem)
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{
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a2.size = 0;
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a2.data = nullptr;
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a2.allocsize = 0;
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a2.ownmem = false;
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}
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/// if responsible, deletes memory
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~NgArray()
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{
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if (ownmem)
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delete [] data;
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}
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/// Change logical size. If necessary, do reallocation. Keeps contents.
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void SetSize(size_t nsize)
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{
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if (nsize > allocsize)
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ReSize (nsize);
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size = nsize;
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}
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void SetSize0()
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{
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size = 0;
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}
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/// Change physical size. Keeps logical size. Keeps contents.
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void SetAllocSize (size_t nallocsize)
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{
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if (nallocsize > allocsize)
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ReSize (nallocsize);
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}
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/// Add element at end of array. reallocation if necessary.
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void Append (const T & el)
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{
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if (size == allocsize)
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ReSize (size+1);
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data[size] = el;
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size++;
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// return size;
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}
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template <typename T2, int B2>
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void Append (NgFlatArray<T2, B2> a2)
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{
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if (size+a2.Size() > allocsize)
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ReSize (size+a2.Size());
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for (int i = 0; i < a2.Size(); i++)
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data[size+i] = a2[i+B2];
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size += a2.Size();
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}
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/// Delete element i (0-based). Move last element to position i.
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void Delete (TIND i)
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{
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#ifdef CHECK_Array_RANGE
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RangeCheck (i+1);
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#endif
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data[i] = std::move(data[size-1]);
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size--;
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// DeleteElement (i+1);
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}
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/// Delete element i (1-based). Move last element to position i.
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void DeleteElement (TIND i)
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{
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#ifdef CHECK_Array_RANGE
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RangeCheck (i);
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#endif
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data[i-1] = std::move(data[size-1]);
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size--;
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}
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/// Delete last element.
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void DeleteLast ()
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{
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size--;
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}
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/// Deallocate memory
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void DeleteAll ()
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{
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if (ownmem)
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delete [] data;
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data = 0;
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size = allocsize = 0;
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}
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/// Fill array with val
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NgArray & operator= (const T & val)
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{
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NgFlatArray<T, BASE, TIND>::operator= (val);
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return *this;
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}
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/// array copy
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NgArray & operator= (const NgArray & a2)
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{
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SetSize (a2.Size());
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for (TIND i (BASE); i < size+BASE; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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/// array copy
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NgArray & operator= (const NgFlatArray<T> & a2)
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{
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SetSize (a2.Size());
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for (TIND i = BASE; i < size+BASE; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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NgArray & operator= (NgArray && a2)
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{
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ngcore::Swap (data, a2.data);
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ngcore::Swap (size, a2.size);
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ngcore::Swap (allocsize, a2.allocsize);
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ngcore::Swap (ownmem, a2.ownmem);
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return *this;
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}
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T * Release()
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{
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ownmem = false;
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return data;
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}
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// Only provide this function if T is archivable
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template<typename T2=T>
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auto DoArchive(Archive& archive) -> typename std::enable_if<is_archivable<T2>, void>::type
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{
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if(archive.Output())
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archive << size;
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else
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{
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size_t s;
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archive & s;
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SetSize(s);
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}
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archive.Do(data, size);
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}
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private:
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/// resize array, at least to size minsize. copy contents
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void ReSize (size_t minsize)
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{
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size_t nsize = 2 * allocsize;
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if (nsize < minsize) nsize = minsize;
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if (data)
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{
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T * p = new T[nsize];
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size_t mins = (nsize < size) ? nsize : size;
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if constexpr(std::is_trivially_copyable<T>::value)
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memcpy (p, data, sizeof(T)*mins);
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else
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for (size_t i = 0; i < mins; i++) p[i] = move(data[i]);
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if (ownmem)
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delete [] data;
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ownmem = 1;
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data = p;
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}
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else
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{
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data = new T[nsize];
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ownmem = 1;
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}
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allocsize = nsize;
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}
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};
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template <class T, int S>
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class NgArrayMem : public NgArray<T>
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{
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using NgArray<T>::size;
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using NgArray<T>::data;
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using NgArray<T>::ownmem;
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T mem[S]; // Intel C++ calls dummy constructor
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// char mem[S*sizeof(T)];
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// double mem[(S*sizeof(T)+7) / 8];
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public:
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/// Generate array of logical and physical size asize
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explicit NgArrayMem(size_t asize = 0)
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: NgArray<T> (S, static_cast<T*> (static_cast<void*>(&mem[0])))
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{
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size = asize;
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if (asize > S)
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{
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data = new T[asize];
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ownmem = 1;
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}
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// SetSize (asize);
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}
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NgArrayMem & operator= (const T & val)
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{
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NgArray<T>::operator= (val);
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return *this;
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}
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/// array copy
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NgArrayMem & operator= (const NgFlatArray<T> & a2)
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{
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this->SetSize (a2.Size());
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for (size_t i = 0; i < size; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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};
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/*
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template <class T, int B1, int B2>
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class IndirectArray
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{
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const NgFlatArray<T, B1> & array;
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const NgFlatArray<int, B2> & ia;
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public:
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IndirectArray (const NgFlatArray<T,B1> & aa, const NgFlatArray<int, B2> & aia)
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: array(aa), ia(aia) { ; }
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int Size() const { return ia.Size(); }
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const T & operator[] (int i) const { return array[ia[i]]; }
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};
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*/
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template <class TA1, class TA2>
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class IndirectArray
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{
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const TA1 & array;
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const TA2 & ia;
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public:
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IndirectArray (const TA1 & aa, const TA2 & aia)
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: array(aa), ia(aia) { ; }
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int Size() const { return ia.Size(); }
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[[deprecated("Use *Range().begin() instead")]]
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int Begin() const { return ia.Begin(); }
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[[deprecated("Use *Range().end() instead")]]
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int End() const { return ia.End(); }
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const typename TA1::TELEM & operator[] (int i) const { return array[ia[i]]; }
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auto Range() const { return ia.Range(); }
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// auto begin() const { return ia.begin(); }
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// auto end() const { return ia.end(); }
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};
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template <typename T1, typename T2>
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inline ostream & operator<< (ostream & s, const IndirectArray<T1,T2> & ia)
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{
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for (int i = ia.Begin(); i < ia.End(); i++)
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s << i << ": " << ia[i] << endl;
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return s;
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}
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/*
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///
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template <class T, int BASE = 0>
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class MoveableArray
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{
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int size;
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int allocsize;
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DynamicMem<T> data;
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public:
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MoveableArray()
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|
{
|
|
size = allocsize = 0;
|
|
data.SetName ("MoveableArray");
|
|
}
|
|
|
|
MoveableArray(int asize)
|
|
: size(asize), allocsize(asize), data(asize)
|
|
{ ; }
|
|
|
|
~MoveableArray () { ; }
|
|
|
|
int Size() const { return size; }
|
|
|
|
void SetSize(int nsize)
|
|
{
|
|
if (nsize > allocsize)
|
|
{
|
|
data.ReAlloc (nsize);
|
|
allocsize = nsize;
|
|
}
|
|
size = nsize;
|
|
}
|
|
|
|
void SetAllocSize (int nallocsize)
|
|
{
|
|
data.ReAlloc (nallocsize);
|
|
allocsize = nallocsize;
|
|
}
|
|
|
|
///
|
|
T & operator[] (int i)
|
|
{ return ((T*)data)[i-BASE]; }
|
|
|
|
///
|
|
const T & operator[] (int i) const
|
|
{ return ((const T*)data)[i-BASE]; }
|
|
|
|
///
|
|
T & Elem (int i)
|
|
{ return ((T*)data)[i-1]; }
|
|
|
|
///
|
|
const T & Get (int i) const
|
|
{ return ((const T*)data)[i-1]; }
|
|
|
|
///
|
|
void Set (int i, const T & el)
|
|
{ ((T*)data)[i-1] = el; }
|
|
|
|
///
|
|
T & Last ()
|
|
{ return ((T*)data)[size-1]; }
|
|
|
|
///
|
|
const T & Last () const
|
|
{ return ((const T*)data)[size-1]; }
|
|
|
|
///
|
|
int Append (const T & el)
|
|
{
|
|
if (size == allocsize)
|
|
{
|
|
SetAllocSize (2*allocsize+1);
|
|
}
|
|
((T*)data)[size] = el;
|
|
size++;
|
|
return size;
|
|
}
|
|
|
|
///
|
|
void Delete (int i)
|
|
{
|
|
DeleteElement (i+1);
|
|
}
|
|
|
|
///
|
|
void DeleteElement (int i)
|
|
{
|
|
((T*)data)[i-1] = ((T*)data)[size-1];
|
|
size--;
|
|
}
|
|
|
|
///
|
|
void DeleteLast ()
|
|
{ size--; }
|
|
|
|
///
|
|
void DeleteAll ()
|
|
{
|
|
size = allocsize = 0;
|
|
data.Free();
|
|
}
|
|
|
|
///
|
|
void PrintMemInfo (ostream & ost) const
|
|
{
|
|
ost << Size() << " elements of size " << sizeof(T) << " = "
|
|
<< Size() * sizeof(T) << endl;
|
|
}
|
|
|
|
MoveableArray & operator= (const T & el)
|
|
{
|
|
for (int i = 0; i < size; i++)
|
|
((T*)data)[i] = el;
|
|
return *this;
|
|
}
|
|
|
|
|
|
MoveableArray & Copy (const MoveableArray & a2)
|
|
{
|
|
SetSize (a2.Size());
|
|
for (int i = 0; i < this->size; i++)
|
|
data[i] = a2.data[i];
|
|
return *this;
|
|
}
|
|
|
|
/// array copy
|
|
MoveableArray & operator= (const MoveableArray & a2)
|
|
{
|
|
return Copy(a2);
|
|
}
|
|
|
|
|
|
void SetName (const char * aname)
|
|
{
|
|
data.SetName(aname);
|
|
}
|
|
private:
|
|
///
|
|
//MoveableArray & operator= (MoveableArray &); //???
|
|
///
|
|
//MoveableArray (const MoveableArray &); //???
|
|
};
|
|
|
|
|
|
template <class T>
|
|
inline ostream & operator<< (ostream & ost, MoveableArray<T> & a)
|
|
{
|
|
for (int i = 0; i < a.Size(); i++)
|
|
ost << i << ": " << a[i] << endl;
|
|
return ost;
|
|
}
|
|
*/
|
|
|
|
|
|
/// bubble sort array
|
|
template <class T>
|
|
inline void BubbleSort (const NgFlatArray<T> & data)
|
|
{
|
|
for (int i = 0; i < data.Size(); i++)
|
|
for (int j = i+1; j < data.Size(); j++)
|
|
if (data[i] > data[j])
|
|
{
|
|
T hv = data[i];
|
|
data[i] = data[j];
|
|
data[j] = hv;
|
|
}
|
|
}
|
|
|
|
/// bubble sort array
|
|
template <class T, class S>
|
|
inline void BubbleSort (NgFlatArray<T> & data, NgFlatArray<S> & slave)
|
|
{
|
|
for (int i = 0; i < data.Size(); i++)
|
|
for (int j = i+1; j < data.Size(); j++)
|
|
if (data[i] > data[j])
|
|
{
|
|
T hv = data[i];
|
|
data[i] = data[j];
|
|
data[j] = hv;
|
|
|
|
S hvs = slave[i];
|
|
slave[i] = slave[j];
|
|
slave[j] = hvs;
|
|
}
|
|
}
|
|
|
|
|
|
template <class T, class S>
|
|
void QuickSortRec (NgFlatArray<T> & data,
|
|
NgFlatArray<S> & slave,
|
|
int left, int right)
|
|
{
|
|
int i = left;
|
|
int j = right;
|
|
T midval = data[(left+right)/2];
|
|
|
|
do
|
|
{
|
|
while (data[i] < midval) i++;
|
|
while (midval < data[j]) j--;
|
|
|
|
if (i <= j)
|
|
{
|
|
ngcore::Swap (data[i], data[j]);
|
|
ngcore::Swap (slave[i], slave[j]);
|
|
i++; j--;
|
|
}
|
|
}
|
|
while (i <= j);
|
|
if (left < j) QuickSortRec (data, slave, left, j);
|
|
if (i < right) QuickSortRec (data, slave, i, right);
|
|
}
|
|
|
|
template <class T, class S>
|
|
void QuickSort (NgFlatArray<T> & data, NgFlatArray<S> & slave)
|
|
{
|
|
if (data.Size() > 1)
|
|
QuickSortRec (data, slave, 0, data.Size()-1);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
template <class T>
|
|
void Intersection (const NgFlatArray<T> & in1, const NgFlatArray<T> & in2,
|
|
NgArray<T> & out)
|
|
{
|
|
out.SetSize(0);
|
|
for(int i=0; i<in1.Size(); i++)
|
|
if(in2.Contains(in1[i]))
|
|
out.Append(in1[i]);
|
|
}
|
|
template <class T>
|
|
void Intersection (const NgFlatArray<T> & in1, const NgFlatArray<T> & in2, const NgFlatArray<T> & in3,
|
|
NgArray<T> & out)
|
|
{
|
|
out.SetSize(0);
|
|
for(int i=0; i<in1.Size(); i++)
|
|
if(in2.Contains(in1[i]) && in3.Contains(in1[i]))
|
|
out.Append(in1[i]);
|
|
}
|
|
}
|
|
|
|
#endif // NGARRAY_HPP_INCLUDED
|
|
|