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were all declared as global).
- Add possibility to remove hints (Resolve or Immediate only) based on
the name of the lemma.
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As said in CHANGES:
<<
The inlining done during application of functors can now be controlled
more precisely. In addition to the "!F G" syntax preventing any inlining,
we can now use a priority level to select parameters to inline :
"<30>F G" means "only inline in F the parameters whose levels are <= 30".
The level of a parameter can be fixed by "Parameter Inline(30) foo".
When levels aren't given, the default value is 100. One can also use
the flag "Set Inline Level ..." to set a level.
>>
Nota : the syntax "Parameter Inline(30) foo" is equivalent to
"Set Inline Level 30. Parameter Inline foo.",
and "Include <30>F G" is equivalent to "Set Inline Level 30. Include F G."
For instance, in ZBinary, eq is @Logic.eq and should rather be inlined,
while in BigZ, eq is (fun x y => [x]=[y]) and should rather not be inlined.
We could achieve this behavior by setting a level such as 30 to the
parameter eq, and then tweaking the current level when applying functors.
This idea of levels might be too restrictive, we'll see, but at least
the implementation of this change was quite simple. There might be
situation where parameters cannot be linearly ordered according to their
"inlinablility". For these cases, we would need to mention names to inline
or not at a functor application, and this is a bit more tricky
(and might be a pain to use if there are many names).
No documentation for the moment, since this feature is experimental
and might still evolve.
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See NatInt/NZBits.v for the common axiomatization of bitwise functions
over naturals / integers. Some specs aren't pretty, but easier to
prove, see alternate statements in property functors {N,Z}Bits.
Negative numbers are considered via the two's complement convention.
We provide implementations for N (in Ndigits.v), for nat (quite dummy,
just for completeness), for Z (new file Zdigits_def), for BigN
(for the moment partly by converting to N, to be improved soon)
and for BigZ.
NOTA: For BigN.shiftl and BigN.shiftr, the two arguments are now in
the reversed order (for consistency with the rest of the world):
for instance BigN.shiftl 1 10 is 2^10.
NOTA2: Zeven.Zdiv2 is _not_ doing (Zdiv _ 2), but rather (Zquot _ 2)
on negative numbers. For the moment I've kept it intact, and have
just added a Zdiv2' which is truly equivalent to (Zdiv _ 2).
To reorganize someday ?
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(floor convention).
We follow Haskell naming convention: quot and rem are for
Round-Toward-Zero (a.k.a Trunc, what Ocaml, C, Asm do by default, cf.
the ex-ZOdiv file), while div and mod are for Round-Toward-Bottom
(a.k.a Floor, what Coq does historically in Zdiv). We use unicode ÷
for quot, and infix rem for rem (which is actually remainder in
full). This way, both conventions can be used at the same time.
Definitions (and proofs of specifications) for div mod quot rem are
migrated in a new file Zdiv_def. Ex-ZOdiv file is now Zquot. With
this new organisation, no need for functor application in Zdiv and
Zquot.
On the abstract side, ZAxiomsSig now provides div mod quot rem.
Zproperties now contains properties of them. In NZDiv, we stop
splitting specifications in Common vs. Specific parts. Instead,
the NZ specification is be extended later, even if this leads to
a useless mod_bound_pos, subsumed by more precise axioms.
A few results in ZDivTrunc and ZDivFloor are improved (sgn stuff).
A few proofs in Nnat, Znat, Zabs are reworked (no more dependency
to Zmin, Zmax).
A lcm (least common multiple) is derived abstractly from gcd and
division (and hence available for nat N BigN Z BigZ :-).
In these new files NLcm and ZLcm, we also provide some combined
properties of div mod quot rem gcd.
We also provide a new file Zeuclid implementing a third division
convention, where the remainder is always positive. This file
instanciate the abstract one ZDivEucl. Operation names are
ZEuclid.div and ZEuclid.modulo.
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We temporary use a hack to convert a module type into a module
Module M := T is refused, so we force an include via
Module M := Nop <+ T where Nop is an empty module.
To be fixed later more beautifully...
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Contributed by Alexandre Ren, Damien Pous, and Thomas Braibant.
I've also included a MSets version, hence FSetPositive might become
soon a mere wrapper for MSetPositive, as for other FSets
implementations.
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For the moment, almost no lemmas about (reflect P b), just the proofs
that it is equivalent with an P<->b=true.
is_true b is (b=true), and is meant to be added as a coercion
if one wants it. In the StdLib, this coercion is not globally
activated, but particular files are free to use Local Coercion...
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- Many of them were broken, some of them after Pierre B's rework
of mli for ocamldoc, but not only (many bad annotation, many files
with no svn property about Id, etc)
- Useless for those of us that work with git-svn (and a fortiori
in a forthcoming git-only setting)
- Even in svn, they seem to be of little interest
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In interfaces fields like compare_spec, a CompSpec is prefered to get
nice extraction, but then no "destruct (compare_spec .. ..)" is
possible in a Type context. Now you can say there
"destruct (CompSpec2Type (compare_spec ... ...))"
This translate to the Type variant, and make the analysis on it
(which is equivalent to analysing the comparison directly).
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We use the <+ operation to regroup all known facts about BigN
(resp BigZ, ...) in a unique module. This uses also the new ! feature
for controling inlining. By the way, we also make sure that these
new BigN and BigZ modules implements OrderedTypeFull and TotalOrder,
and also contains facts about min and max (cf. GenericMinMax).
Side effects:
- In NSig and ZSig, specification of compare and eq_bool is now
done with respect to Zcompare and Zeq_bool, as for other ops.
The order <= and < are also defined via Zle and Zlt, instead
of using compare. Min and max are axiomatized instead of being
macros.
- Some proofs rework in QMake
- QOrderedType and Qminmax were in fact not compiled by make world
Still todo: OrderedType + MinMax for BigQ, etc etc
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Old stuff DecidableType.v and OrderedType.v stay there and keep their
names for the moment, for compatibility.
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Syntax Include Type is still active, but deprecated, and triggers a warning.
The syntax M <+ M' <+ M'', which performs internally an Include, also
benefits from this: M, M', M'' can be independantly modules or module type.
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without scope.
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Leibniz part
Moreover, instantiation like MinMax are now made without redefining
generic properties (easier maintenance). We start using inner modules
for qualifying (e.g. Z.max_comm).
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with Inline)
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OrderedType2
OrderedType2 is reorganized in atomic module type following the same approach used
for DecidableType2.
We use the following convention: module type Foo' is exactly module type Foo,
except that some notations may have been added. In functor arg, we can use
Foo or Foo' depending on whether we want nice notation or not. Note that any
implementation of Foo is accepted as implementation of Foo' :-). For the moment,
these notations are not placed in specific scopes, I think it isn't useful, but
I may be wrong, we'll see later when using them.
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This used to be convenient in FSets, but since we now try to integrate
DecidableType and OrderedType as foundation for other part of the stdlib,
this should be avoided, otherwise some eauto take a _long_ time.
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NB: the grammar entry is placed in vernac:command on purpose
even if it should have gone into vernac:gallina_ext. Camlp4
isn't factorising rules starting by "Declare" in a correct way
otherwise...
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As a consequence, revert to some pedestrian proofs of Equivalence here
and there, without the need for the Measure class.
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compatibility...)
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in */*/vo.itarget
On the way: no more -fsets (yes|no) and -reals (yes|no) option of configure
if you want a partial build, make a specific rule such as theories-light
Beware: these vo.itarget should not contain comments. Even if this is legal
for ocamlbuild, the $(shell cat ...) we do in Makefile can't accept that.
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functors
For Module F(X:SIG), making now a Include F will try to find the X fields in
the current context, just as was doing earlier Include Self F. This specific
syntax is removed, freeing the keyword "Self". Anyway, with the use of the
syntax "<+" there was already hardly any need for syntax "Include Self".
Idem for Include Type.
Beware that a typo such as "Include F" instead of "Include F G" will
produce a different message now, about a missing field instead of
a not-enough-applied functor.
By the way, some code clean-up and factorisation of inner recursive
functions in declaremods.ml.
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Improve generalization by equalities tactic, now allowing to
generalize an arbitrary application, e.g. in preparation for applying an
elimination principle for a function. This adds a flag to generalize_dep
so that it doesn't abstract the variable if it is defined, just
introducing a let-in.
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Any place where <: was legal can now contain many <: declarations.
Moreover we can say that the module type we are declaring is a subtype
of an earlier module type. See DecidableType2 for examples.
Also try to handle correctly the freeze/unfreeze summaries
when simulating start/include/end (syntax ... := ... <+ ...)
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"Module M (...) := M1 <+ M2 <+ M3 <+ ..." is now a shortcut for
"Module M (...). Include M1. Include M2. Include M3... End M."
Moreover M2,M3,etc can be functors as long as they find what they need in what
comes before them (see new command "Include Self").
The only real constraint is that M1,M2,M3,... should not have common elements
(for the moment (?)).
Same behavior for signature : Module Type M := M1 <+ M2 <+ M3.
Note that this <+ is _not_ a primitive construct of the module language,
for instance it cannot be used in signature (Module M <: M1 <+ M2 is
illegal for the moment).
Some example of use in Decidable2 and NZAxioms
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We can now have a diamond-like approch to extentions of signatures,
instead of a linear-only chains as earlier...
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- No more nesting of Module and Module Type, we rather use Include.
- Instead of in-name-qualification like NZeq, we use uniform
short names + modular qualification like N.eq when necessary.
- Many simplification of proofs, by some autorewrite for instance
- In NZOrder, we instantiate an "order" tactic.
- Some requirements in NZAxioms were superfluous: compatibility
of le, min and max could be derived from the rest.
- NMul removed, since it was containing only an ad-hoc result for
ZNatPairs, that we've inlined in the proof of mul_wd there.
- Zdomain removed (was already not compiled), idea of a module
with eq and eqb reused in DecidableType.BooleanEqualityType.
- ZBinDefs don't contain any definition now, migrate it to ZBinary.
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+ adaptation of {Nat,N,P,Z,Q,R}_as_DT for them to provide both eq_dec and eqb
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- A richer OrderedTypeFull interface : OrderedType + predicate "le"
- Implementations {Nat,N,P,Z,Q}OrderedType.v, also providing "order" tactics
- By the way: as suggested by S. Lescuyer, specification of compare is
now inductive
- GenericMinMax: axiomatisation + properties of min and max out of
OrderedTypeFull structures.
- MinMax.v, {Z,P,N,Q}minmax.v are specialization of GenericMinMax,
with also some domain-specific results, and compatibility layer
with already existing results.
- Some ML code of plugins had to be adapted, otherwise wrong "eq",
"lt" or simimlar constants were found by functions like coq_constant.
- Beware of the aliasing problems: for instance eq:=@eq t instead of
eq:=@eq M.t in Make_UDT made (r)omega stopped working (Z_as_OT.t
instead of Z in statement of Zmax_spec).
- Some Morphism declaration are now ambiguous: switch to new syntax
anyway.
- Misc adaptations of FSets/MSets
- Classes/RelationPairs.v: from two relations over A and B, we
inspect relations over A*B and their properties in terms of classes.
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ForallPairs, etc
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variables with syntax:
[Local?|Global] Generalizable Variable(s)? [all|none|id1 idn].
By default no variable is generalizable, so this patch breaks backward
compatibility with files that used implicit generalization (through
Instance declarations for example). To get back the old behavior, one
just needs to use [Global Generalizable Variables all].
Make coq_makefile more robust using [mkdir -p].
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Implicit Arguments, Arguments Scope and Coercion fixed, noneffective
Global in sections for Hints and Notation detected).
Misc. improvements (comments + interpretation of Hint Constructors +
dev printer for hint_db).
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Thanks to the functors in FSetCompat, the three implementations
of FSets (FSetWeakList, FSetList, FSetAVL) are just made of a few
lines adapting the corresponding MSets implementation to the old
interface.
This approach breaks FSetFullAVL. Since this file is of little use
for stdlib users, we migrate it into contrib Orsay/FSets.
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This file contains low-level stuff for FSets/FMaps. Switching it to
the new version (the one using Equivalence and so on instead of
eq_refl/eq_sym/eq_trans and so on) only leads to a few changes in
FSets/FMaps that are minor and probably invisible to standard users.
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In particular we remove them from the hint db, a few autos become
calls to order. Moreover, lt_antirefl --> lt_irrefl for uniformity.
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FSets, and improve it
As soon as you have a eq, a lt and a le (that may be lt\/eq, or (complement (flip (lt)))
and a few basic properties over them, you can instantiate functor MakeOrderTac
and gain an "order" tactic. See comments in the file for the scope of this tactic.
NB: order doesn't call auto anymore. It only searches for a contradiction in the
current set of (in)equalities (after the goal was optionally turned into hyp
by double negation). Thanks to S. Lescuyer for his suggestions about this tactic.
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