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formula: new trivial simplifications

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Add the following rules:
  - f|[+] = [+] if f rejects [*0]
  - f|[*] = [*] if f accepts [*0]
  - f&&[+] = f if f rejects [*0]
  - b:b[*i..j] = b[*max(i,1)..j]
  - b[*i..j]:b[*k..l] = b[*max(i,1)+max(k,1)-1,1), j+l-1]

* spot/tl/formula.cc: Implement the new rules.
* doc/tl/tl.tex: Document them.
* tests/core/equals.test: Test them.
* NEWS: Add them
This commit is contained in:
Alexandre Duret-Lutz 2022-12-08 13:54:19 +01:00
parent 8ed9e3381f
commit 720c380412
4 changed files with 147 additions and 14 deletions
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8
tests/core/equals.test
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@ -1,6 +1,6 @@
#! /bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2009-2012, 2014-2015, 2021 Laboratoire de Recherche et
# Copyright (C) 2009-2012, 2014-2015, 2021, 2022 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
# Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
# département Systèmes Répartis Coopératifs (SRC), Université Pierre
@ -196,6 +196,12 @@ G({1}<>->1), 1
{(a*;b|c)[:*0]}, 1
{(a*;b|c)[:*1]}, {(a*;b|c)}
{(a;b):(a;b):(a;b)[:*2]:(a;b):b*:b*:(c;d)[:*1]}, {(a;b)[:*5]:b*[:*2]:(c;d)}
{((a;b)|[+]|(c;d[*]));a}, {[+];a}
{((a;b)|[+]|(d[*]));a}, {[*];a}
{((a;b)&&[+]&&(d[*]));a}, {((a;b)&&(d[*]));a}
{((a;b|[*0])&&[+]&&(d[*]));a}, {((a;b|[*0])&&[+]&&(d[*]));a}
{(a;c):b[*3..5]:b[*10]:(a;c)}, {(a;c):b[*12..14]:(a;c)}
{(a;c):b:b[*3..5]:b:b[*0..4]:(a;c)}, {(a;c):b[*3..8]:(a;c)}
EOF