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-rw-r--r--bfs.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/bfs.h b/bfs.h
index 63766e7..b589def 100644
--- a/bfs.h
+++ b/bfs.h
@@ -202,6 +202,10 @@ struct expr {
/** Whether this expression has no side effects. */
bool pure;
+ /** Whether this expression always evaluates to true. */
+ bool always_true;
+ /** Whether this expression always evaluates to false. */
+ bool always_false;
/** Number of times this predicate was executed. */
size_t evaluations;