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Rename methods for clarity instead of brevity. No functional changes.
llvm-svn: 119820
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4965983b22
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c65d4d6d14
@ -203,10 +203,10 @@ public:
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VT val[N];
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/// copy - Copy elements from another node.
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/// @param other Node elements are copied from.
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/// @param Other Node elements are copied from.
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/// @param i Beginning of the source range in other.
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/// @param j Beginning of the destination range in this.
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/// @param count Number of elements to copy.
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/// @param Count Number of elements to copy.
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template <unsigned M>
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void copy(const NodeBase<KT, VT, M> &Other, unsigned i,
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unsigned j, unsigned Count) {
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@ -216,21 +216,21 @@ public:
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std::copy(Other.val + i, Other.val + i + Count, val + j);
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}
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/// lmove - Move elements to the left.
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/// moveLeft - Move elements to the left.
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/// @param i Beginning of the source range.
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/// @param j Beginning of the destination range.
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/// @param count Number of elements to copy.
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void lmove(unsigned i, unsigned j, unsigned Count) {
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assert(j <= i && "Use rmove shift elements right");
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/// @param Count Number of elements to copy.
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void moveLeft(unsigned i, unsigned j, unsigned Count) {
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assert(j <= i && "Use moveRight shift elements right");
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copy(*this, i, j, Count);
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}
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/// rmove - Move elements to the right.
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/// moveRight - Move elements to the right.
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/// @param i Beginning of the source range.
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/// @param j Beginning of the destination range.
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/// @param count Number of elements to copy.
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void rmove(unsigned i, unsigned j, unsigned Count) {
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assert(i <= j && "Use lmove shift elements left");
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/// @param Count Number of elements to copy.
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void moveRight(unsigned i, unsigned j, unsigned Count) {
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assert(i <= j && "Use moveLeft shift elements left");
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assert(j + Count <= N && "Invalid range");
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std::copy_backward(key + i, key + i + Count, key + j + Count);
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std::copy_backward(val + i, val + i + Count, val + j + Count);
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@ -239,55 +239,57 @@ public:
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/// erase - Erase elements [i;j).
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/// @param i Beginning of the range to erase.
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/// @param j End of the range. (Exclusive).
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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void erase(unsigned i, unsigned j, unsigned Size) {
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lmove(j, i, Size - j);
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moveLeft(j, i, Size - j);
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}
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/// shift - Shift elements [i;size) 1 position to the right.
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/// @param i Beginning of the range to move.
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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void shift(unsigned i, unsigned Size) {
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rmove(i, i + 1, Size - i);
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moveRight(i, i + 1, Size - i);
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}
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/// xferLeft - Transfer elements to a left sibling node.
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/// @param size Number of elements in this.
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/// @param sib Left sibling node.
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/// @param ssize Number of elements in sib.
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/// @param count Number of elements to transfer.
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void xferLeft(unsigned Size, NodeBase &Sib, unsigned SSize, unsigned Count) {
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/// transferToLeftSib - Transfer elements to a left sibling node.
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/// @param Size Number of elements in this.
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/// @param Sib Left sibling node.
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/// @param SSize Number of elements in sib.
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/// @param Count Number of elements to transfer.
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void transferToLeftSib(unsigned Size, NodeBase &Sib, unsigned SSize,
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unsigned Count) {
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Sib.copy(*this, 0, SSize, Count);
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erase(0, Count, Size);
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}
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/// xferRight - Transfer elements to a right sibling node.
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/// @param size Number of elements in this.
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/// @param sib Right sibling node.
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/// @param ssize Number of elements in sib.
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/// @param count Number of elements to transfer.
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void xferRight(unsigned Size, NodeBase &Sib, unsigned SSize, unsigned Count) {
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Sib.rmove(0, Count, SSize);
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/// transferToRightSib - Transfer elements to a right sibling node.
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/// @param Size Number of elements in this.
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/// @param Sib Right sibling node.
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/// @param SSize Number of elements in sib.
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/// @param Count Number of elements to transfer.
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void transferToRightSib(unsigned Size, NodeBase &Sib, unsigned SSize,
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unsigned Count) {
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Sib.moveRight(0, Count, SSize);
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Sib.copy(*this, Size-Count, 0, Count);
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}
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/// adjLeftSib - Adjust the number if elements in this node by moving
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/// adjustFromLeftSib - Adjust the number if elements in this node by moving
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/// elements to or from a left sibling node.
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/// @param size Number of elements in this.
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/// @param sib Right sibling node.
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/// @param ssize Number of elements in sib.
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/// @param add The number of elements to add to this node, possibly < 0.
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/// @param Size Number of elements in this.
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/// @param Sib Right sibling node.
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/// @param SSize Number of elements in sib.
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/// @param Add The number of elements to add to this node, possibly < 0.
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/// @return Number of elements added to this node, possibly negative.
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int adjLeftSib(unsigned Size, NodeBase &Sib, unsigned SSize, int Add) {
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int adjustFromLeftSib(unsigned Size, NodeBase &Sib, unsigned SSize, int Add) {
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if (Add > 0) {
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// We want to grow, copy from sib.
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unsigned Count = std::min(std::min(unsigned(Add), SSize), N - Size);
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Sib.xferRight(SSize, *this, Size, Count);
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Sib.transferToRightSib(SSize, *this, Size, Count);
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return Count;
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} else {
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// We want to shrink, copy to sib.
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unsigned Count = std::min(std::min(unsigned(-Add), Size), N - SSize);
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xferLeft(Size, Sib, SSize, Count);
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transferToLeftSib(Size, Sib, SSize, Count);
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return -Count;
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}
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}
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@ -463,7 +465,7 @@ public:
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/// findFrom - Find the first interval after i that may contain x.
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/// @param i Starting index for the search.
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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/// @param x Key to search for.
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/// @return First index with !stopLess(key[i].stop, x), or size.
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/// This is the first interval that can possibly contain x.
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@ -519,7 +521,7 @@ public:
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/// possible. This may cause the node to grow by 1, or it may cause the node
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/// to shrink because of coalescing.
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/// @param i Starting index = insertFrom(0, size, a)
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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/// @param a Interval start.
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/// @param b Interval stop.
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/// @param y Value be mapped.
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@ -578,7 +580,7 @@ insertFrom(unsigned i, unsigned Size, KeyT a, KeyT b, ValT y) {
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/// extendStop - Extend stop(i) to b, coalescing with following intervals.
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/// @param i Interval to extend.
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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/// @param b New interval end point.
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/// @return New node size after coalescing.
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template <typename KeyT, typename ValT, unsigned N, typename Traits>
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@ -644,7 +646,7 @@ public:
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/// findFrom - Find the first subtree after i that may contain x.
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/// @param i Starting index for the search.
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/// @param size Number of elements in node.
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/// @param Size Number of elements in node.
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/// @param x Key to search for.
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/// @return First index with !stopLess(key[i], x), or size.
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/// This is the first subtree that can possibly contain x.
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@ -680,9 +682,9 @@ public:
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/// insert - Insert a new (subtree, stop) pair.
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/// @param i Insert position, following entries will be shifted.
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/// @param size Number of elements in node.
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/// @param node Subtree to insert.
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/// @param stp Last key in subtree.
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/// @param Size Number of elements in node.
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/// @param Node Subtree to insert.
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/// @param Stop Last key in subtree.
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void insert(unsigned i, unsigned Size, NodeRefT Node, KeyT Stop) {
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assert(Size < N && "branch node overflow");
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assert(i <= Size && "Bad insert position");
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@ -1647,7 +1649,7 @@ iterator::overflowLeaf() {
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if (CurSize[n] == NewSize[n])
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continue;
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for (int m = n - 1; m != -1; --m) {
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int d = Node[n]->adjLeftSib(CurSize[n], *Node[m], CurSize[m],
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int d = Node[n]->adjustFromLeftSib(CurSize[n], *Node[m], CurSize[m],
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NewSize[n] - CurSize[n]);
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CurSize[m] -= d;
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CurSize[n] += d;
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@ -1662,7 +1664,7 @@ iterator::overflowLeaf() {
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if (CurSize[n] == NewSize[n])
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continue;
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for (unsigned m = n + 1; m != Nodes; ++m) {
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int d = Node[m]->adjLeftSib(CurSize[m], *Node[n], CurSize[n],
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int d = Node[m]->adjustFromLeftSib(CurSize[m], *Node[n], CurSize[n],
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CurSize[n] - NewSize[n]);
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CurSize[m] += d;
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CurSize[n] -= d;
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