Commit 296dc646 authored by Simon Friis Vindum's avatar Simon Friis Vindum Committed by Robbert Krebbers
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Add comment documenting the dfrac notation

parent faba7343
......@@ -32,6 +32,10 @@ Inductive dfrac :=
| DfracDiscarded : dfrac
| DfracBoth : Qp dfrac.
(* This notation is intended to be used as a component in other notations that
include discardable fractions. The notation provides shorthands for the
constructors and the commonly used full fraction. For and example
demonstrating how this can be used see the notation in [gen_heap.v]. *)
Declare Custom Entry dfrac.
Notation "{ dq }" := (dq) (in custom dfrac at level 1, dq constr).
Notation "□" := DfracDiscarded (in custom dfrac).
......
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