Jip J. Dekker
3e72b0e857
git-subtree-dir: software/gecode_on_record git-subtree-split: 37ed9bda495ea87e63217c19a374b5a93bb0078e
291 lines
6.9 KiB
C++
Executable File
291 lines
6.9 KiB
C++
Executable File
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Mikael Lagerkvist <lagerkvist@gecode.org>
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Mikael Lagerkvist, 2007
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* Christian Schulte, 2017
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <sstream>
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namespace Gecode {
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/*
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* Ranges
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*
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*/
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forceinline unsigned int
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TupleSet::Range::width(void) const {
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return static_cast<unsigned int>(max - min + 1);
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}
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forceinline const TupleSet::BitSetData*
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TupleSet::Range::supports(unsigned int n_words, int n) const {
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assert((min <= n) && (n <= max));
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return s + n_words * static_cast<unsigned int>(n - min);
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}
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/*
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* Tuple set data
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*
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*/
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forceinline
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TupleSet::Data::Data(int a)
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: arity(a), n_words(0U), // To be initialized in finalize
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n_tuples(0), n_free(n_initial_free),
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min(Int::Limits::max), max(Int::Limits::min), key(0),
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td(heap.alloc<int>(n_initial_free * a)),
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vd(heap.alloc<ValueData>(a)),
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range(nullptr), support(nullptr) {
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}
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forceinline bool
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TupleSet::Data::finalized(void) const {
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return n_free < 0;
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}
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forceinline TupleSet::Tuple
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TupleSet::Data::add(void) {
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if (n_free == 0)
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resize();
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assert(n_free > 0);
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n_free--;
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Tuple t = td + n_tuples*arity;
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n_tuples++;
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return t;
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}
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forceinline TupleSet::Tuple
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TupleSet::Data::get(int i) const {
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assert((i >= 0) && (i < n_tuples));
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return td + i*arity;
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}
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forceinline unsigned int
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TupleSet::ValueData::start(int k) const {
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if (n > 1U) {
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unsigned int l=0U, h=n-1U;
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while (true) {
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assert(l<=h);
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unsigned int m = l + ((h-l) >> 1);
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if (k < r[m].min)
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h=m-1U;
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else if (k > r[m].max)
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l=m+1U;
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else
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return m;
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}
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GECODE_NEVER;
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} else {
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return 0U;
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}
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}
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forceinline void
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TupleSet::Data::set(BitSetData* d, unsigned int i) {
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d[i / BitSetData::bpb].set(i % BitSetData::bpb);
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}
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forceinline bool
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TupleSet::Data::get(const BitSetData* d, unsigned int i) {
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return d[i / BitSetData::bpb].get(i % BitSetData::bpb);
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}
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forceinline unsigned int
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TupleSet::Data::tuple2idx(Tuple t) const {
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return static_cast<unsigned int>((t - td) / static_cast<unsigned int>(arity));
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}
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forceinline const TupleSet::Range*
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TupleSet::Data::fst(int i) const {
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return &vd[i].r[0];
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}
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forceinline const TupleSet::Range*
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TupleSet::Data::lst(int i) const {
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return &vd[i].r[vd[i].n-1U];
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}
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/*
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* Tuple set
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*
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*/
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forceinline TupleSet&
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TupleSet::add(const IntArgs& t) {
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_add(t); return *this;
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}
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forceinline
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TupleSet::TupleSet(void) {}
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forceinline
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TupleSet::operator bool(void) const {
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return object() != nullptr;
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}
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forceinline void
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TupleSet::finalize(void) {
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Data* d = static_cast<Data*>(object());
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if (!d->finalized())
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d->finalize();
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}
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forceinline bool
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TupleSet::finalized(void) const {
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return static_cast<Data*>(object())->finalized();
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}
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forceinline TupleSet::Data&
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TupleSet::data(void) const {
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assert(finalized());
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return *static_cast<Data*>(object());
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}
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forceinline TupleSet::Data&
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TupleSet::raw(void) const {
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return *static_cast<Data*>(object());
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}
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forceinline bool
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TupleSet::operator !=(const TupleSet& t) const {
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return !(*this == t);
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}
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forceinline int
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TupleSet::arity(void) const {
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return raw().arity;
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}
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forceinline int
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TupleSet::tuples(void) const {
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return raw().n_tuples;
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}
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forceinline unsigned int
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TupleSet::words(void) const {
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return data().n_words;
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}
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forceinline int
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TupleSet::min(void) const {
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return data().min;
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}
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forceinline int
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TupleSet::max(void) const {
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return data().max;
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}
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forceinline TupleSet::Tuple
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TupleSet::operator [](int i) const {
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return data().get(i);
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}
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forceinline const TupleSet::Range*
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TupleSet::fst(int i) const {
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return data().fst(i);
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}
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forceinline const TupleSet::Range*
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TupleSet::lst(int i) const {
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return data().lst(i);
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}
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forceinline bool
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TupleSet::operator ==(const TupleSet& t) const {
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if (tuples() != t.tuples())
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return false;
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if (arity() != t.arity())
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return false;
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if (min() != t.min())
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return false;
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if (max() != t.max())
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return false;
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return equal(t);
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}
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forceinline std::size_t
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TupleSet::hash(void) const {
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return data().key;
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}
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template<class Char, class Traits>
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std::basic_ostream<Char,Traits>&
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operator <<(std::basic_ostream<Char,Traits>& os, const TupleSet& ts) {
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std::basic_ostringstream<Char,Traits> s;
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s.copyfmt(os); s.width(0);
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s << "Number of tuples: " << ts.tuples()
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<< " (number of words: " << ts.words() << " with "
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<< Support::BitSetData::bpb << " bits)" << std::endl;
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for (int a=0; a < ts.arity(); a++) {
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unsigned int size = 0U;
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for (const TupleSet::Range* c=ts.fst(a); c<=ts.lst(a); c++)
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size += c->width();
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s << "\t[" << a << "] size: " << size
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<< ", width: "
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<< static_cast<unsigned int>(ts.lst(a)->max - ts.fst(a)->min + 1)
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<< ", ranges: "
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<< (ts.lst(a) - ts.fst(a) + 1U)
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<< std::endl;
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}
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return os << s.str();
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}
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/*
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* Range iterator
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*
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*/
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forceinline
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TupleSet::Ranges::Ranges(const TupleSet& ts, int i) {
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c = &(ts.data().vd[i].r[0]);
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l = c + ts.data().vd[i].n;
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}
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forceinline bool
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TupleSet::Ranges::operator ()(void) const {
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return c<l;
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}
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forceinline void
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TupleSet::Ranges::operator ++(void) {
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c++;
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}
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forceinline int
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TupleSet::Ranges::min(void) const {
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return c->min;
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}
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forceinline int
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TupleSet::Ranges::max(void) const {
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return c->max;
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}
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forceinline unsigned int
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TupleSet::Ranges::width(void) const {
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return c->width();
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}
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}
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// STATISTICS: int-prop
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