From e43b1768d0f8399f426b92f4dfe31955daceb1a4 Mon Sep 17 00:00:00 2001 From: Maxime Dénès Date: Fri, 16 Feb 2018 01:02:17 +0100 Subject: Primitive integers This work makes it possible to take advantage of a compact representation for integers in the entire system, as opposed to only in some reduction machines. It is useful for heavily computational applications, where even constructing terms is not possible without such a representation. Concretely, it replaces part of the retroknowledge machinery with a primitive construction for integers in terms, and introduces a kind of FFI which maps constants to operators (on integers). Properties of these operators are expressed as explicit axioms, whereas they were hidden in the retroknowledge-based approach. This has been presented at the Coq workshop and some Coq Working Groups, and has been used by various groups for STM trace checking, computational analysis, etc. Contributions by Guillaume Bertholon and Pierre Roux Co-authored-by: Benjamin Grégoire Co-authored-by: Vincent Laporte --- kernel/subtyping.ml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/subtyping.ml') diff --git a/kernel/subtyping.ml b/kernel/subtyping.ml index 347c30dd64..2fc3aa99b5 100644 --- a/kernel/subtyping.ml +++ b/kernel/subtyping.ml @@ -257,10 +257,10 @@ let check_constant cst env l info1 cb2 spec2 subst1 subst2 = anything of the right type can implement it, even if bodies differ. *) (match cb2.const_body with - | Undef _ | OpaqueDef _ -> cst + | Primitive _ | Undef _ | OpaqueDef _ -> cst | Def lc2 -> (match cb1.const_body with - | Undef _ | OpaqueDef _ -> error NotConvertibleBodyField + | Primitive _ | Undef _ | OpaqueDef _ -> error NotConvertibleBodyField | Def lc1 -> (* NB: cb1 might have been strengthened and appear as transparent. Anyway [check_conv] will handle that afterwards. *) -- cgit v1.2.3