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Diffstat (limited to 'pretyping/evarconv.ml')
| -rw-r--r-- | pretyping/evarconv.ml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/pretyping/evarconv.ml b/pretyping/evarconv.ml index 144166a34..2144639d5 100644 --- a/pretyping/evarconv.ml +++ b/pretyping/evarconv.ml @@ -1394,6 +1394,16 @@ let the_conv_x_leq env ?(ts=default_transparent_state env) t1 t2 evd = | Success evd' -> evd' | UnifFailure (evd',e) -> raise (UnableToUnify (evd',e)) +let make_opt = function + | Success evd -> Some evd + | UnifFailure _ -> None + +let conv env ?(ts=default_transparent_state env) evd t1 t2 = + make_opt(evar_conv_x ts env evd CONV t1 t2) + +let cumul env ?(ts=default_transparent_state env) evd t1 t2 = + make_opt(evar_conv_x ts env evd CUMUL t1 t2) + let e_conv env ?(ts=default_transparent_state env) evdref t1 t2 = match evar_conv_x ts env !evdref CONV t1 t2 with | Success evd' -> evdref := evd'; true |