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val-sel-commit.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, 2012
8 *
9 * This file is part of Gecode, the generic constraint
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33
35
36namespace Gecode { namespace Float { namespace Branch {
37
38 ValSelCommitBase<FloatView,FloatNumBranch>*
39 valselcommit(Space& home, const FloatValBranch& fvb) {
40 switch (fvb.select()) {
42 return new (home) ValSelCommit<ValSelLq,ValCommitLqGq>(home,fvb);
44 return new (home) ValSelCommit<ValSelGq,ValCommitLqGq>(home,fvb);
46 return new (home) ValSelCommit<ValSelRnd,ValCommitLqGq>(home,fvb);
48 if (!fvb.commit()) {
49 return new (home)
51 } else {
52 return new (home)
54 }
55 default:
56 throw UnknownBranching("Float::branch");
57 }
58 }
59
61 valselcommit(Space& home, const FloatAssign& fa) {
62 switch (fa.select()) {
64 return new (home) ValSelCommit<ValSelLq,ValCommitLqGq>(home,fa);
66 return new (home) ValSelCommit<ValSelGq,ValCommitLqGq>(home,fa);
68 return new (home) ValSelCommit<ValSelRnd,ValCommitLqGq>(home,fa);
70 if (!fa.commit()) {
71 return new (home)
73 } else {
74 return new (home)
76 }
77 default:
78 throw UnknownBranching("Float::assign");
79 }
80 }
81
82}}}
83
84// STATISTICS: float-branch
85
Which values to select for assignment.
Definition float.hh:1880
@ SEL_MAX
Select median value of the upper part.
Definition float.hh:1885
@ SEL_VAL_COMMIT
Select value according to user-defined functions.
Definition float.hh:1887
@ SEL_RND
Select median value of a randomly chosen part.
Definition float.hh:1886
@ SEL_MIN
Select median value of the lower part.
Definition float.hh:1884
Select select(void) const
Return selection strategy.
Definition assign.hpp:49
Which values to select for branching first.
Definition float.hh:1826
Select select(void) const
Return selection strategy.
Definition val.hpp:49
@ SEL_SPLIT_RND
Select values randomly which are not greater or not smaller than mean of largest and smallest value.
Definition float.hh:1832
@ SEL_SPLIT_MIN
Select values not greater than mean of smallest and largest value.
Definition float.hh:1830
@ SEL_VAL_COMMIT
Select value according to user-defined functions.
Definition float.hh:1833
@ SEL_SPLIT_MAX
Select values greater than mean of smallest and largest value.
Definition float.hh:1831
Value commit class for less or equal or greater or equal.
Definition branch.hh:298
Exception: Unknown value or variable selection passed as argument
Computation spaces.
Definition core.hpp:1744
BranchCommit commit(void) const
Return commit function.
Definition val.hpp:102
Class for user-defined value commit.
Base class for value selection and commit.
Class for value selection and commit.
User-defined value selection.
Definition val-sel.hpp:67
Float branchers.
ValSelCommitBase< FloatView, FloatNumBranch > * valselcommit(Space &home, const FloatValBranch &svb)
Return value and commit for float views.
Floating point numbers.
Gecode toplevel namespace