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Code Issues 15 Releases 21 Activity
296 Commits 2 Branches 21 Tags
618189368c94a6d3865af2e0e8634f760a904a39
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Author SHA1 Message Date
patrickandpatrick 618189368c Split functions from their declarations 
This splits occurrences of functions from their declaration. This is
necessary to flag integer functions consistently and not just single
occurrences.
 2018-04-27 17:59:10 +02:00
patrickandpatrick d0debc6ad1 Split predicates from their declarations 
This refactoring separates predicates from their declarations. The
purpose of this is to avoid duplicating properties specific to the
predicate declaration and not its occurrences in the program.
 2018-04-27 17:55:59 +02:00
patrickandpatrick 3ba80e8c9d Minor refactoring 2018-04-27 17:38:29 +02:00
patrickandpatrick d66d3557c1 Minor refactoring 2018-04-27 17:25:43 +02:00
patrickandpatrick e15a6b2e88 Remove Constant class 
Constants are not a construct present in Clingo’s AST and were
unintentionally made part of anthem’s AST. This removes the unused
classes for clarity.
 2018-04-27 17:08:41 +02:00
patrick 9a59ac17f5 Version bump after release 0.1.8 2018-04-20 16:37:03 +02:00
patrick 250942643c Version bump for release 0.1.8 2018-04-20 16:35:35 +02:00
patrick 815bcda367 Update cxxopts to 2.1.0+1+gcc4914f 
cxxopts 2.1.0 has a bug preventing it from being used with standard main
signatures. This updates cxxopts to the commit after release 2.1.0,
where this issue was addressed.
 2018-04-13 14:03:30 +02:00
patrick 04094eee23 Remove unnecessary parentheses 
The unary modulus operation does not require extra parentheses to be
printed in cases like “|X + Y|”. This adds a new option to the printing
routine to omit parentheses in cases where the parent expression already
defines a parenthesis-like scope (currently only with unary operations).
 2018-04-12 00:59:03 +02:00
patrick 8c250f5c59 Support modulus operation (absolute value) 
This adds support for computing the absolute value of a term along with
an according unit test.
 2018-04-12 00:38:48 +02:00
patrick 0608748349 Describe --complete option in readme 
The readme was missing information on the --complete option. This adds a
brief mention of Clark’s completion to the readme.
 2018-04-11 23:21:56 +02:00
patrick 31d4a20491 Update change log with recent additions 
This updates the change log with the advanced simplification rules,
support for the exponentation operator, and the newly added examples.
 2018-04-11 21:50:15 +02:00
patrick a01e78a467 Add example program for prime number detection 2018-04-11 21:42:08 +02:00
patrick 797660d6de Add new simplification rule 
This adds the rule “(not F [comparison] G) === (F [negated comparison]
G)” to the simplification rule tableau.
 2018-04-11 21:39:27 +02:00
patrick b63ef21849 Add example program generating permutations 2018-04-11 21:35:29 +02:00
patrick cc3c9b642c Minor formatting in graph coloring example 2018-04-11 21:35:04 +02:00
patrick 40ddee8444 Add new simplification rule 
This adds the rule “(not F or G) === (F -> G)” to the simplification
rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 6f7b021712 Add new simplification rule 
This adds the rule “(not (F and G)) === (not F or not G)” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 23624007ec Add new simplification rule 
This adds the rule “not not F === F” to the simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 6d7b91c391 Add new simplification rule 
This adds the rule “(F <-> (F and G)) === (F -> G)” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick b88393655a Iteratively apply simplification tableau rules 
With this change, the tableau rules for simplifying formula are applied
iteratively until a fixpoint is reached.
 2018-04-10 22:34:47 +02:00
patrick c4c3156e77 Move simplification rule to tableau 
This moves the rule “[primitive A] in [primitive B] === A = B” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 107dae7287 Move simplification rule to tableau 
This moves the rule “exists () (F) === F” to the simplification rule
tableau.
 2018-04-10 22:34:47 +02:00
patrick 827d6e40fe Move simplification rule to tableau 
This moves the rule “[conjunction of only F] === F” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 4a85fc4b23 Move simplification rule to tableau 
This moves the rule “exists ... ([#true/#false]) === [#true/#false]” to
the simplification rule tableau along with “[empty conjunction] ===
 2018-04-10 22:34:46 +02:00
patrick 7e3fc007c8 Move simplification rule to tableau 
This moves the rule “exists X (X = t and F(X)) === exists () (F(t))” to
the simplification rule tableau.
 2018-04-10 22:34:46 +02:00
patrick 5c5411c0ff Implement simplification rule tableau 
This implements a tableau containing simplification rules that can be
iteratively applied to input formulas until they remain unchanged.

First, this moves the rule “exists X (X = Y) === #true” to the tableau
as a reference implementation.
 2018-04-10 22:34:46 +02:00
patrick eaabeb0c55 Support exponentiation operator 
Because of a bug in the Clingo API, the exponentation operator was not
properly exposed to anthem. This updates Clingo to a version with a
fixed API and adds proper support for exponentation within anthem along
with a matching unit test.
 2018-04-10 22:29:55 +02:00
patrick 7b6729acaa Add missing dependency to Ubuntu image 
For some reason, Bison is not implicitly installed along with the other
dependencies in the Ubuntu 18.04 image used for continuous integration.
This adds Bison explicitly.
 2018-04-10 22:29:55 +02:00
patrick 92fddd6665 Version bump after release 0.1.7 2018-04-08 21:03:20 +02:00
patrick 582b6ade6d Version bump for release 0.1.7 2018-04-08 20:44:43 +02:00
patrick e64b2e70de Remove unused captured lambda reference 2018-04-08 20:44:43 +02:00
patrick d7e4af98d7 Update copyright year in license file 2018-04-08 20:35:03 +02:00
patrick a406cb43bd Update graph coloring example with placeholders 
This replaces the former graph coloring example with a new formulation
that makes use of the newly supported placeholders.
 2018-04-08 20:28:57 +02:00
patrick c294a29cb2 Support placeholders with #external declarations 
This adds support for declaring predicates as placeholders through the
“#external” directive in the input language of clingo.

Placeholders are not subject to completion. This prevents predicates
that represent instance-specific facts from being assumed as universally
false by default negation when translating an encoding.

This stretches clingo’s usual syntax a bit to make the implementation
lightweight. In order to declare a predicate with a specific arity as a
placeholder, the following statement needs to be added to the program:

    #external <predicate name>(<arity>).

Multiple unit tests cover cases where placeholders are used or not as
well as a more complex graph coloring example.
 2018-04-08 20:28:57 +02:00
patrick c91cbaf58b Update Catch to 2.2.2 2018-04-07 00:22:01 +02:00
patrick 2a2fec0eac Update change log with dependency change 
This adds the dependency change from Boost (for program options) to
cxxopts to the change log.
 2018-04-06 23:08:57 +02:00
patrick 09e56c3bce Format change log sections with proper headings 
This makes the change log sections have proper headings, which were just
normal text before.
 2018-04-06 22:53:59 +02:00
patrick e2c0d6b705 Update cxxopts to 2.0.0+3+gabe9ebd 
With cxxopts 2.0.0, positional arguments weren’t recognized when other
command-line options were passed before. This has been fixed in the
meantime, but there is no release with the bug fix yet.

This updates cxxopts to a newer commit to ship anthem with this fix.
 2018-04-06 22:44:14 +02:00
patrick e01506f9ff Drop Boost dependency 
Boost was only used for program option parsing. To avoid this huge
dependency, this commit replaces boost::program_options with cxxopts,
a header-only library with the same functionality.

cxxopts is added as a submodule, and Boost is removed from the
dependencies in the code and Travis configuration.
 2018-03-25 17:24:06 +02:00
patrick 50ebf3c6de Install g++ package explicitly on Ubuntu 
Apparently, g++ is only installed because of the Boost dependency.
Make the g++ dependency explicit to avoid future package errors.
 2018-03-25 17:23:33 +02:00
patrick fde2af5841 Add clang to Travis configurations 
This adds the clang compiler to the tested Travis configurations.
 2018-03-24 18:53:51 +01:00