X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fassembly%2Ffreescale%2Ffreescale_ocaml%2Fmatita_nat_nat.ml;fp=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fassembly%2Ffreescale%2Ffreescale_ocaml%2Fmatita_nat_nat.ml;h=dfefaeb2dcfc2344f4e0733554c7ef6f8b213bbd;hb=ecdb00b94db5abc2f7df2dcbaa76b1b5639ebaee;hp=0000000000000000000000000000000000000000;hpb=dc58e20b610718080da9a4bdb4db4ac7780be8f9;p=helm.git

diff --git a/helm/software/matita/contribs/assembly/freescale/freescale_ocaml/matita_nat_nat.ml b/helm/software/matita/contribs/assembly/freescale/freescale_ocaml/matita_nat_nat.ml
new file mode 100644
index 000000000..dfefaeb2d
--- /dev/null
+++ b/helm/software/matita/contribs/assembly/freescale/freescale_ocaml/matita_nat_nat.ml
@@ -0,0 +1,31 @@
+type nat =
+O
+ | S of nat
+;;
+
+let nat_rec =
+(function p -> (function f -> let rec aux = 
+(function n -> 
+(match n with 
+   O -> p
+ | S(n1) -> (f n1 (aux n1)))
+) in aux))
+;;
+
+let nat_rect =
+(function p -> (function f -> let rec aux = 
+(function n -> 
+(match n with 
+   O -> p
+ | S(n1) -> (f n1 (aux n1)))
+) in aux))
+;;
+
+let pred =
+(function n -> 
+(match n with 
+   O -> O
+ | S(p) -> p)
+)
+;;
+