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idea :-(
(some bad interaction with Arnaud's framework ??)
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Vouillon)
As said at the beginning of the file:
This file contains basic definitions of a 31-bit integer
arithmetic. In fact it is more general than that. The only reason
for this use of 31 is the underlying mecanism for hardware-efficient
computations by A. Spiwack. Apart from this, a switch to, say,
63-bit integers is now just a matter of replacing every occurences
of 31 by 63. This is actually made possible by the use of
dependently-typed n-ary constructions for the inductive type
[int31], its constructor [I31] and any pattern matching on it.
If you modify this file, please preserve this genericity.
From the user point-of-view, almost nothing has changed: functions
like On, In, shiftr, shiftl and a few others now have a
syntactically-different definition, but thanks to Eval compute in their
definition, this leads to the exact same coq objects as before. The only
difference is "Check I31" that shows the compact n-ary version
(nfun digits 31 int31) instead of (digits -> ... -> digits -> int31).
But even "Print int31" shows the same answer as before (the above type
of I31 is shown after expansion).
Arnaud, could you check whether all this works fine with your
retroknowledge ?
Notice the new file NaryFunction that contain generic stuff about
n-ary dependent functions. It should end some day in another place
than theories/Numbers, but I cant figure where for now. This file is
also quite skinny yet, but it's a start.
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for helping rewriting under Quantifiers and binders, but Matthieu's
setoid rewrite now has the same kind of capabilities by default.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10966 85f007b7-540e-0410-9357-904b9bb8a0f7
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part).
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no longer
needed to compile theories/Numbers. QRewrite will probably be removed in a latter commit
(need to check 2-3 things first with Matthieu and Evgeny)
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This isn't useful for BigN et BigZ, but it can't hurt; and moreover
it's a simple way to understand CyclicAxioms. Next step: proving that
Int31 is also an implementation of CyclicAxiom.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10942 85f007b7-540e-0410-9357-904b9bb8a0f7
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a non-dependent product under a lambda. Now qiff can be replaced
by a simple setoid_rewrite in NumPrelude.
Change configure to not do stripping if compiling with -g...
Add -g / CAMLDEBUG flags to the native compilation command too.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10941 85f007b7-540e-0410-9357-904b9bb8a0f7
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(n _must_ in fact be a power of 2). Worse: Z_31Z is just plain wrong
since it is Z/(2^31)Z and not Z/31Z (my fault).
As a consequence, switch to CyclicAxioms, Cyclic31, DoubleCyclic, etc
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In fact, for the moment, it was only containing a proof that Z/nZ
implements the NatInt NZAxiomsSig. We move it to a more meaningful
place and name.
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* View of Int31 as a Z/nZ moved to file Z31Z.v (TO FINISH: specs are still admitted!)
* Modular specification of Z/nZ moved to ZnZ and renamed CyclicType
* More isolation between Cyclic/Abstract and Cyclic/DoubleCyclic
* A few comments
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using the ad-hoc qsetoid_rewrite. Could QRewrite.v be made completely obsolete ?
For the moment rewrite under fun and exists don't work.
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- Fix a typo in lowercase_utf8
- Fix generation of signatures in subtac_cases not working for dependent
inductive types with dependent indices.
- Fix coercion of inductive types generating ill-typed terms.
- Fix test script using new syntax for Instances.
- Move simpl_existTs to Program.Equality and use it in simpl_depind.
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change the default pretty-printing to use Π, λ instead of
forall and fun (and allow "," as well as "=>" for "fun" to be more
consistent with the standard forall and exists syntax). Parsing allows
theses new forms too, even if not in -unicode, and does not make Π or
λ keywords. As usual, criticism and suggestions are welcome :)
Not sure what to do about "->"/"→" ?
- [setoid_replace by] now uses tactic3() to get the right parsing level
for tactics.
- Type class [Instance] names are now mandatory.
- Document [rewrite at/by] and fix parsing of occs to support their
combination.
- Backtrack on [Enriching] modifier, now used exclusively in the
implementation of implicit arguments.
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binders.
- Change syntax of type class instances to better match the usual syntax of
lemmas/definitions with name first, then arguments ":" instance.
Update theories/Classes accordingly.
- Correct globalization of tactic references when doing Ltac :=/::=, update
documentation.
- Remove the not so useful "(x &)" and "{{x}}" syntaxes from
Program.Utils, and subset_scope as well.
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complexité exponentielle dans la machine lazy depuis que l'algo de
compilation du filtrage évite systématiquement d'expanser quand le
filtrage n'est pas dépendant.
- Un peu plus de colorisation dans coqide.
- Utilisation de formats pour améliorer de l'affichage des notations Utf8.
- Systématisation paire Local/Global dans g_vernac.ml4 (même si le
défaut n'est pas toujours le même)
- Bug Makefile
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pour les listes (trop contraignant)
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the very handy Printf.ifprintf was not available on earlier ocaml.
This file now uses a very dirty compatibility hack.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10906 85f007b7-540e-0410-9357-904b9bb8a0f7
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generation of NMake.v
- genN.ml becomes NMake_gen.ml
- no need to produce the corresponding binary: we use ocaml NMake_gen.ml > NMake.v
- beware! redoing a ./configure is mandatory after this commit
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of NMake.v
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For the moment, the Ints files are simply moved into directories in
theories/Numbers with meaningful names. No filenames changed, apart
from:
Zaux.v -> theories/Numbers/BigNumPrelude.v
MemoFn.v -> theories/Lists/StreamMemo.v
More to come...
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name after internalisation, to get the correct behavior with typeclass
binders. This simplifies the pretty printing and translation
of the recursive argument name in various places too. Use this
opportunity to factorize the different internalization and
interpretation functions of binders as well.
This definitely fixes part 2 of bug
#1846 and makes it possible to use fixpoint definitions with typeclass arguments in
program too, with an example given in EquivDec.
At the same time, one fix and one enhancement in Program:
- fix a de Bruijn bug in subtac_cases
- introduce locations of obligations and use them in case the obligation tactic
raises a failure when tried on a particular obligation, as suggested by
Sean Wilson.
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morphismes). Les mettre au niveau 90 est peut-être plus naturel mais
entraîne trop d'incompatibilités (cf commit 10813 et 10825)
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du filtrage. Cela permet de détecter les cas impossibles et de simuler
les contraintes d'inversion exprimables sous la forme d'un assignement
des arguments du constructeurs (cf le cas de Vtail dans Bvector.v).
Si l'on filtre sur t:I u1 .. un, et que chaque ui a la forme vi(wi)
avec vi composé uniquement de constructeurs, et que le résultat final
est P(w1,...,wn) (qui est éventuellement lui-même une evar) alors on
construit le prédicat
Q:=fun x1 .. xn y =>
match x1 .. xn y with
| v1(z) .. vn(z) t => P(z)
| _ .. _ _ => ?evar-speciale-cas-impossible
end
qui vérifiera bien que Q u1 .. un = P(w1,..,wp).
En raison de limitations de l'unification (on aurait besoin d'eta
conversion pour résoudre des problèmes du genre
"terme rigide == match x with _ => ?evar end", et besoin d'instanciation par
constructeurs pour des cas comme "A(y) = match ?evar with C x => A(x) end"),
je n'ai pas réussi à traiter le cas général.
Aussi, on adopte une stratégie pragmatique consistant à tester
plusieurs prédicats possibles :
- si un type final est donné, on essaie d'abord l'algorithme de
Matthieu et sinon le nouvel algorithme (permet par exemple de traiter
certains cas d'élimination dépendante de Bvector.v),
- s'il n'y a pas de type final, on essaie d'abord le nouvel algo et
sinon, on essaie avec un prédicat sans dépendance (permet de traiter
des cas compliqués comme celui de par cas sur I' dans le fichier
Case13.v de la test-suite).
Dans la pratique, il y a beaucoup de changement dans le code de compile_case.
- Par exemple, la compilation est maintenant toujours appelé avec un
prédicat (là où l'on pouvait avoir None, on a maintenant toujours au
moins une evar).
- En revanche, le membre droit des clauses est maintenant
optionnel. Si c'est None, c'est qu'on se trouve dans le cas d'une
branche impossible au moment du calcul du prédicat de retour.
- Aussi, on renonce aux PrLetIn et PrProd dans l'expression du
predicat de retour mais il faut savoir que c'est maintenant la liste
des tomatchs qui spécifie le contexte exact dans lequel le prédicat
de retour est bien typé.
- Et d'autres...
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syntaxe interne de ring_lookup et field_lookup qui n'était pas assez
robuste pour supporter une syntaxe [ ... ] dans constr.
Déplacement de now_show de List.v vers Tactics.v, déplacement de "[ _ ]"
au niveau 0.
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in reasonable time), add (unfinished) documentation on type classes.
Put some classes into Prop explicitely as singleton inductive types are
no longer in Prop by default even if all the arguments are (is that
really what we want? roconnor says no).
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now. Fix proof scripts that failed correspondingly. Should make many
contribs compile again...
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fichiers en attendant une intégration à theories/Numbers
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substitution. Makes unification succeed a bit more often, hence auto
works better in some cases.
- Backtrack the changes of auto using Hint Unfold to do more delta and add
a new tactic "new auto" which does that, for compatibility.
The first fix may have a big impact on the contribs, whereas the second
should make them compile again... we'll see.
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failures in proof search. Catch Refiner.FailError in typeclasses eauto
to indicate that an extern tactic failed.
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account.
- Add test case for bug #1844 on Combined Scheme.
- Change Reflexive_partial_app_morphism to require a Reflexive proof to
cut down search earlier, without losing anything.
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debugging and printing hint databases
- Typeclasses unfold now correctly adds _global_ unfold hints.
- New tactic autosimpl to do simplification using the declared unfold
hints in given hint databases.
- Work on auto-modulo-some-delta (the declared Unfold constants),
actually used mostly if the goal contains evars, as Hint_db.map_auto
does not work up-to any conversions (yet).
- Fix GenMul which was using the old semantics of failing early because
of variance checks, which is not possible in the new implementation.
- Restrict when reflexive_morphism may be used using an extern tactic.
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de l'argument donné contient des métavariables (souhait
#1408). Beaucoup d'infrastructure autour des constantes pour cela mais
qu'on devrait pouvoir récupérer pour analyser plus finement le
comportement des constantes en général :
1- Pour insérer les coercions, on utilise une transformation
(expérimentale) de Metas vers Evars le temps d'appeler coercion.ml.
2- Pour la compatibilité, on s'interdit d'insérer une coercion entre
classes flexibles parce que sinon l'insertion de coercion peut prendre
précédence sur la résolution des evars ce qui peut changer les
comportements (comme dans la preuve de fmg_cs_inv dans CFields de CoRN).
3- Pour se souvenir rapidement de la nature flexible ou rigide du
symbole de tête d'une constante vis à vis de l'évaluation, on met en
place une table associant à chaque constante sa constante de tête (heads.ml)
4- Comme la table des constantes de tête a besoin de connaître
l'opacité des variables de section, la partie tables de declare.ml va
dans un nouveau decls.ml.
Au passage, simplification de coercion.ml, correction de petits bugs
(l'interface de Gset.fold n'était pas assez générale; specialize
cherchait à typer un terme dans un mauvais contexte d'evars [tactics.ml];
whd_betaiotazeta avait un argument env inutile [reduction.ml, inductive.ml])
et nettoyage (declare.ml, decl_kinds.ml, avec incidence sur class.ml,
classops.ml et autres ...; uniformisation noms tables dans autorewrite.ml).
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so that the example of bug #1425 is accepted.
- Backtrack level of notations for morphism signatures to 55.
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term unification (for constant and variable delta unfolding) and one to
parameterize closed-term conversion. Most of the time conversion uses
full delta and unification does no delta. This fine-grain is used in
rewrite/setoid_rewrite, where only closed-term delta on global constants
is allowed.
- Interpret Hint Unfold as a directive for delta conversion in
auto/eauto when applying lemmas (i.e., for Resolve and Immediate hints).
- Remove ad-hoc support for this in typeclasses. Now setoid_rewrite
works correctly w.r.t. the old version regarding local definitions.
- Fix closed bugs which needed updating due to syntax modifications.
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lists of occurrences through tactics. Implement the "at" variants of
setoid_replace correspondingly.
Fix in class_tactics efor w_unify not checking types when unifying a
meta with anything (problematic at top-level only).
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- Closed bugs 121, 1696, 1438, 1425, 1696, 1604, 1738, 1760, 1683 related to
setoids. Add corresponding test files.
- Add new modulo_zeta flag to control zeta during unification (e.g. not
allowed for setoid_rewrite unification, but ok for almost everything
else).
- Various fixes in class_tactics with respect to evars and error
messages.
- Correct error message for NoOccurenceFound, distinguishing between a
rewrite in the goal or an hypothesis.
- Move notations for ==>, --> and ++> to level 90 as suggested by
Russell O'Conor.
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The benefit of these "only-parsing" notations in Bool.v were to
avoid replacing qualified Bool.andb by Datatypes.andb and so on.
But such Bool.xxxx are fairly rare (e.g. none in contribs),
and these notations have one serious drawback: with them,
Print andb leads to Datatypes.andb instead of the body of andb.
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and idem for |||, thanks to a specific scope lazy_bool_scope.
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- More meaningful argument name for resolve_typeclasses.
- Try to remove unneeded instance declarations in
Morphisms.
- Allow the proofs of reflexivity arising from unchanged
arguments in setoid_rewrite to be fullfiled by Morphism instances and
not necessariy because the relation is reflexive (needed by
higher-order morphisms). Use a new "MorphismProxy" class to implement
that efficiently.
- Fix a bug in abstract_generalize not delta-reducing a type where it should.
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This way, no more references to NBinDefs.N when doing "Print N".
Long-term migration to theories/Numbers is still planned, but it needs
more works, for instance to adapt both positive and N and Z at once.
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SetoidTactics and document it. Cleanup Classes.Equivalence.
Minor fixes to the Program doc.
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semantics.
- Add an Equivalence instance for pointwise equality from an
Equivalence on the codomain of a function type, used by default when
comparing functions with the Setoid's ===/equiv.
- Partially fix the auto hint database "add" function where the exact
same lemma could be added twice (happens when doing load for example).
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