X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnReference.mli;h=d7f87e57c1712e63cba89dd1ea29d49d00893c14;hb=11b2157bacf59cfc561c2ef6f92ee41ee2c1a006;hp=d291b621b7140c828e12a5614ffd28a15ea85890;hpb=46b91f34b693dabbd351ba813f5190051b09a117;p=helm.git

diff --git a/helm/software/components/ng_kernel/nReference.mli b/helm/software/components/ng_kernel/nReference.mli
index d291b621b..d7f87e57c 100644
--- a/helm/software/components/ng_kernel/nReference.mli
+++ b/helm/software/components/ng_kernel/nReference.mli
@@ -26,6 +26,7 @@ type reference = private Ref of NUri.uri * spec
 val reference_of_spec: NUri.uri -> spec -> reference
 
 val eq: reference -> reference -> bool
+val compare: reference -> reference -> int
 val string_of_reference: reference -> string 
 val reference_of_string: string -> reference