diff options
Diffstat (limited to 'pretyping/reductionops.ml')
| -rw-r--r-- | pretyping/reductionops.ml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pretyping/reductionops.ml b/pretyping/reductionops.ml index 2cb7b80f73..76a053872a 100644 --- a/pretyping/reductionops.ml +++ b/pretyping/reductionops.ml @@ -770,6 +770,10 @@ let decomp_sort env sigma t = | Sort s -> s | _ -> raise NotASort +let is_sort env sigma arity = + try let _ = decomp_sort env sigma arity in true + with NotASort -> false + (* reduction to head-normal-form allowing delta/zeta only in argument of case/fix (heuristic used by evar_conv) *) |