 17 Jan, 2019 1 commit


Quentin Garchery authored
we continue to use the duplicating version of eliminate_if_term for atomic formulas but we replace ifthenelse with epsilon in Tlet and Tcase

 28 Sep, 2017 1 commit


MARCHE Claude authored

 08 Mar, 2016 1 commit


Andrei Paskevich authored

 20 Aug, 2015 1 commit


Andrei Paskevich authored
except for modules/impset.mlw (because of Fset) and modules/mach/* (because of program cloning), the standard library now typechecks. This is still very much the work in progress. Many functions and predicates have still to be converted to "let function" and "let predicate". Here are some TODOs:  do not require the return type for "val predicate", "val lemma", etc.  do not require explicit variant for "let rec" if the code passes the termination check in Decl (see list.why)  what should become "val ghost function" and what should stay just "function" (see array.mlw, matrix.mlw, string.mlw, etc)?  some defined functions in algebra.why and relations.why had to be removed, so that they can be implemented with "let function" in int.mlw (since they are defined, they cannot be instantiated with letfunctions). This seems too restrictive. One way out would be to authorise instantiation of defined functions (with a VC).  should we keep the keyword "model"? reuse of "abstract" in types breaks syntax coloring ("abstract" requires closing "end" in programs but not in types; maybe we can drop that "end" again?).

 10 Jun, 2014 1 commit


Andrei Paskevich authored

 27 May, 2014 2 commits


Andrei Paskevich authored

Andrei Paskevich authored

 20 Jan, 2014 1 commit


Andrei Paskevich authored
Currently, the builtin theory why3.HighOrd (or just HighOrd) must be explicitly "use"d. However, the type (HighOrd.func 'a 'b) can be written ('a > 'b), and the type (HighOrd.pred 'a) can be written ('a > bool), and the application operation (HighOrd.(@)) can be written as the usual juxtaposition. Thus, normally, you do not have to write the qualifiers. The builtin theory why3.Bool (or just Bool) is needed for "bool". The names "HighOrd", "func", "pred", and "(@)" are not yet fixed and may change. "eliminate_epsilon" tries to be smart when a lambda (or some other comprehension form) occurs under equality or at the top of a definition. We could go even further and replace (\ x . t) s with t[x < s], without lifting the lambda. I'm not sure it's worth it: we rarely write redexes manually. They can and will appear through inlining, though. Anyone who wants to construct epsilonterms directly using the API should remember that these are not Hilbert's epsilons: by writing an epsilon term, you postulate the existence (though not necessarily uniqueness) of the described object, and "eliminate_epsilon" will happily convert it to an axiom expressing this existence. We only use epsilons to write comprehensions whose soundness is guaranteed by a background theory, e.g. lambdacalculus.

 02 Nov, 2013 1 commit


Andrei Paskevich authored
also, avoid the "encoding_sort" transformation, if it can be done directly in the printer. On the same example as in the previous commits, this gives 5x acceleration together with some memory usage reduction.

 14 Jun, 2013 1 commit


JeanChristophe Filliatre authored

 13 Jun, 2013 1 commit


JeanChristophe Filliatre authored

 23 Jan, 2013 1 commit


Andrei Paskevich authored

 26 Sep, 2012 1 commit


MARCHE Claude authored

 01 Sep, 2012 1 commit


Guillaume Melquiond authored
Add monoids to the algebraic hierarchy.

 29 Jun, 2012 1 commit


Andrei Paskevich authored
