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tracer.cpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2016
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
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32 */
33
34#include <iomanip>
35#include <gecode/float.hh>
36
37namespace Gecode {
38
40 : os(os0) {}
41
42 void
44 os << "trace<Float>::init(id:" << t.id();
45 if (t.group().in())
46 os << ",g:" << t.group().id();
47 os << ") slack: 100.00% (" << t.slack().initial() << " width)"
48 << std::endl;
49 }
50
51 void
53 const ViewTraceInfo& vti, int i, FloatTraceDelta& d) {
54 os << "trace<Float>::prune(id:" << t.id();
55 if (t.group().in())
56 os << ",g:" << t.group().id();
57 os << "): [" << i << "] = " << t[i] << " - ["
58 << d.min() << ".." << d.max()
59 << "] by " << vti << std::endl;
60 }
61
62 void
64 os << "trace<Float>::fix(id:" << t.id();
65 if (t.group().in())
66 os << ",g:" << t.group().id();
67 os << ") slack: ";
68 double sl_i = static_cast<double>(t.slack().initial());
69 double sl_p = static_cast<double>(t.slack().previous());
70 double sl_c = static_cast<double>(t.slack().current());
71 double p_c = 100.0 * (sl_c / sl_i);
72 double p_d = 100.0 * (sl_p / sl_i) - p_c;
73 os << std::showpoint << std::setprecision(4)
74 << p_c << "% - "
75 << std::showpoint << std::setprecision(4)
76 << p_d << '%'
77 << std::endl;
78 }
79
80 void
82 os << "trace<Float>::fail(id:" << t.id();
83 if (t.group().in())
84 os << ",g:" << t.group().id();
85 os << ") slack: ";
86 double sl_i = static_cast<double>(t.slack().initial());
87 double sl_p = static_cast<double>(t.slack().previous());
88 double sl_c = static_cast<double>(t.slack().current());
89 double p_c = 100.0 * (sl_c / sl_i);
90 double p_d = 100.0 * (sl_p / sl_i) - p_c;
91 os << std::showpoint << std::setprecision(4)
92 << p_c << "% - "
93 << std::showpoint << std::setprecision(4)
94 << p_d << '%'
95 << std::endl;
96 }
97
98 void
100 os << "trace<Float>::done(id:" << t.id();
101 if (t.group().in())
102 os << ",g:" << t.group().id();
103 os << ") slack: ";
104 double sl_i = static_cast<double>(t.slack().initial());
105 double sl_p = static_cast<double>(t.slack().previous());
106 double sl_c = static_cast<double>(t.slack().current());
107 double p_c = 100.0 * (sl_c / sl_i);
108 double p_d = 100.0 * (sl_p / sl_i) - p_c;
109 os << std::showpoint << std::setprecision(4)
110 << p_c << "% - "
111 << std::showpoint << std::setprecision(4)
112 << p_d << '%'
113 << std::endl;
114 }
115
117
118}
119
120// STATISTICS: float-trace
Trace delta information for float variables.
Definition float.hh:2055
unsigned int id(void) const
Return a unique id for the group.
Definition core.hpp:4981
bool in(Group a) const
Check whether actor group a is included in this group.
Definition core.hpp:4963
int min(int i) const
Return minimum of range at position i.
int max(int i) const
Return maximum of range at position i.
unsigned int id(void) const
Return propagator id.
Definition core.hpp:3549
PropagatorGroup group(void) const
Return group propagator belongs to.
Definition core.hpp:3554
Computation spaces.
Definition core.hpp:1744
Standard float variable tracer.
Definition float.hh:2100
static StdFloatTracer def
Default tracer (printing to std::cerr)
Definition float.hh:2119
StdFloatTracer(std::ostream &os0=std::cerr)
Initialize with output stream os0.
Definition tracer.cpp:39
virtual void fail(const Space &home, const FloatTraceRecorder &t)
Print failure information.
Definition tracer.cpp:81
virtual void fix(const Space &home, const FloatTraceRecorder &t)
Print fixpoint information.
Definition tracer.cpp:63
std::ostream & os
Output stream to use.
Definition float.hh:2103
virtual void done(const Space &home, const FloatTraceRecorder &t)
Print that trace recorder is done.
Definition tracer.cpp:99
virtual void prune(const Space &home, const FloatTraceRecorder &t, const ViewTraceInfo &vti, int i, FloatTraceDelta &d)
Print prune information.
Definition tracer.cpp:52
virtual void init(const Space &home, const FloatTraceRecorder &t)
Print init information.
Definition tracer.cpp:43
View trace information.
Definition core.hpp:910
const Slack & slack(void) const
Provide access to slack information.
Definition recorder.hpp:208
ViewTraceRecorder< Float::FloatView > FloatTraceRecorder
Trace recorder for float variables.
Definition float.hh:2094
Gecode toplevel namespace