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-rw-r--r--contrib/extraction/extraction.mli7
1 files changed, 6 insertions, 1 deletions
diff --git a/contrib/extraction/extraction.mli b/contrib/extraction/extraction.mli
index 87f97641c..e3a747ce0 100644
--- a/contrib/extraction/extraction.mli
+++ b/contrib/extraction/extraction.mli
@@ -40,4 +40,9 @@ val extract_declaration : global_reference -> ml_decl
(*s Check whether a global reference corresponds to a logical inductive. *)
-val declaration_is_logical_ind : global_reference -> bool
+val decl_is_logical_ind : global_reference -> bool
+
+(*s Check if a global reference corresponds to the constructor of
+ a singleton inductive. *)
+
+val decl_is_singleton : global_reference -> bool