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twa_graph: swap the two passes of merge_edges()

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This improves the determinism in a few cases.

* spot/twa/twagraph.cc (merge_edges): Encapsulate the two
passes into lambdas so that they are very easy to swap.
* spot/twa/twagraph.hh (merge_edges): Adjust documentation.
* tests/python/mergedge.py: Add test case.
* tests/core/alternating.test, tests/python/alternation.ipynb:
Determinism was improved.
* tests/core/parity2.test, tests/core/readsave.test,
tests/core/sbacc.test, tests/python/_product_susp.ipynb,
tests/python/atva16-fig2a.ipynb, tests/python/decompose.ipynb,
tests/python/highlighting.ipynb, tests/python/satmin.ipynb,
tests/python/simstate.py: Adjust expected order of edges.
* NEWS: Mention the change.
This commit is contained in:
Alexandre Duret-Lutz 2021-01-19 20:58:04 +01:00
parent e8e31c2723
commit 2072151499
15 changed files with 1963 additions and 1896 deletions
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22
tests/core/sbacc.test
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@ -1,6 +1,6 @@
#! /bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2015-2017, 2020 Laboratoire de Recherche et
# Copyright (C) 2015-2017, 2020-2021 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -37,23 +37,23 @@ properties: deterministic stutter-invariant
State: 0 {0 1}
[0&1] 0
[!0&!1] 1
[!0&1] 2
[0&!1] 3
[0&!1] 2
[!0&1] 3
State: 1
[0&1] 0
[!0&!1] 1
[!0&1] 2
[0&!1] 3
State: 2 {1}
[0&!1] 2
[!0&1] 3
State: 2 {0}
[0&1] 0
[!0&!1] 1
[!0&1] 2
[0&!1] 3
State: 3 {0}
[0&!1] 2
[!0&1] 3
State: 3 {1}
[0&1] 0
[!0&!1] 1
[!0&1] 2
[0&!1] 3
[0&!1] 2
[!0&1] 3
--END--
EOF