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-rw-r--r--src/main/scala/firrtl/backends/experimental/smt/SMTExprMap.scala4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/main/scala/firrtl/backends/experimental/smt/SMTExprMap.scala b/src/main/scala/firrtl/backends/experimental/smt/SMTExprMap.scala
index c991941f..8e035186 100644
--- a/src/main/scala/firrtl/backends/experimental/smt/SMTExprMap.scala
+++ b/src/main/scala/firrtl/backends/experimental/smt/SMTExprMap.scala
@@ -2,7 +2,9 @@
// Author: Kevin Laeufer <laeufer@cs.berkeley.edu>
package firrtl.backends.experimental.smt
-private object SMTExprMap {
+object SMTExprMap {
+
+ /** maps f over subexpressions of expr and returns expr with the results replaced */
def mapExpr(expr: SMTExpr, f: SMTExpr => SMTExpr): SMTExpr = {
val bv = (b: BVExpr) => f(b).asInstanceOf[BVExpr]
val ar = (a: ArrayExpr) => f(a).asInstanceOf[ArrayExpr]