diff options
Diffstat (limited to 'kernel/esubst.ml')
-rw-r--r-- | kernel/esubst.ml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/esubst.ml b/kernel/esubst.ml index 2e1b42d43..cbce04d62 100644 --- a/kernel/esubst.ml +++ b/kernel/esubst.ml @@ -23,6 +23,8 @@ type lift = | ELLFT of int * lift (* ELLFT(n,l) == apply l to de Bruijn > n *) (* i.e under n binders *) +let el_id = ELID + (* compose a relocation of magnitude n *) let rec el_shft_rec n = function | ELSHFT(el,k) -> el_shft_rec (k+n) el @@ -69,6 +71,8 @@ type 'a subs = * Needn't be recursive if we always use these functions *) +let subs_id i = ESID i + let subs_cons(x,s) = if Array.length x = 0 then s else CONS(x,s) let subs_liftn n = function |