tracer.cpp

00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2016
00008  *
00009  *  Last modified:
00010  *     $Date: 2017-03-17 23:04:57 +0100 (Fri, 17 Mar 2017) $ by $Author: schulte $
00011  *     $Revision: 15597 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 #include <iomanip>
00039 #include <gecode/float.hh>
00040 
00041 namespace Gecode {
00042 
00043   StdFloatTracer::StdFloatTracer(std::ostream& os0)
00044     : os(os0) {}
00045 
00046   void
00047   StdFloatTracer::init(const Space&, const FloatTraceRecorder& t) {
00048     os << "trace<Float>::init(id:" << t.id();
00049     if (t.group().in())
00050       os << ",g:";t.group().id();
00051     os << ") slack: 100.00% (" << t.slack().initial() << " width)"
00052        << std::endl;
00053   }
00054 
00055   void
00056   StdFloatTracer::prune(const Space&, const FloatTraceRecorder& t,
00057                         const ViewTraceInfo& vti, int i, FloatTraceDelta& d) {
00058     os << "trace<Float>::prune(id:" << t.id();
00059     if (t.group().in())
00060       os << ",g:";t.group().id();
00061     os << "): [" << i << "] = " << t[i] << " - ["
00062        << d.min() << ".." << d.max()
00063        << "] by " << vti << std::endl;
00064   }
00065 
00066   void
00067   StdFloatTracer::fix(const Space&, const FloatTraceRecorder& t) {
00068     os << "trace<Float>::fix(id:" << t.id();
00069     if (t.group().in())
00070       os << ",g:";t.group().id();
00071     os << ") slack: ";
00072     double sl_i = static_cast<double>(t.slack().initial());
00073     double sl_p = static_cast<double>(t.slack().previous());
00074     double sl_c = static_cast<double>(t.slack().current());
00075     double p_c = 100.0 * (sl_c / sl_i);
00076     double p_d = 100.0 * (sl_p / sl_i) - p_c;
00077     os << std::showpoint << std::setprecision(4)
00078        << p_c << "% - "
00079        << std::showpoint << std::setprecision(4)
00080        << p_d << '%'
00081        << std::endl;
00082   }
00083 
00084   void
00085   StdFloatTracer::fail(const Space&, const FloatTraceRecorder& t) {
00086     os << "trace<Float>::fail(id:" << t.id();
00087     if (t.group().in())
00088       os << ",g:";t.group().id();
00089     os << ") slack: ";
00090     double sl_i = static_cast<double>(t.slack().initial());
00091     double sl_p = static_cast<double>(t.slack().previous());
00092     double sl_c = static_cast<double>(t.slack().current());
00093     double p_c = 100.0 * (sl_c / sl_i);
00094     double p_d = 100.0 * (sl_p / sl_i) - p_c;
00095     os << std::showpoint << std::setprecision(4)
00096        << p_c << "% - "
00097        << std::showpoint << std::setprecision(4)
00098        << p_d << '%'
00099        << std::endl;
00100   }
00101 
00102   void
00103   StdFloatTracer::done(const Space&, const FloatTraceRecorder& t) {
00104     os << "trace<Float>::done(id:" << t.id();
00105     if (t.group().in())
00106       os << ",g:";t.group().id();
00107     os << ") slack: ";
00108     double sl_i = static_cast<double>(t.slack().initial());
00109     double sl_p = static_cast<double>(t.slack().previous());
00110     double sl_c = static_cast<double>(t.slack().current());
00111     double p_c = 100.0 * (sl_c / sl_i);
00112     double p_d = 100.0 * (sl_p / sl_i) - p_c;
00113     os << std::showpoint << std::setprecision(4)
00114        << p_c << "% - "
00115        << std::showpoint << std::setprecision(4)
00116        << p_d << '%'
00117        << std::endl;
00118   }
00119 
00120   StdFloatTracer StdFloatTracer::def;
00121 
00122 }
00123 
00124 // STATISTICS: float-trace