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-rw-r--r--src/runtime/c/pgf/expr.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/runtime/c/pgf/expr.h b/src/runtime/c/pgf/expr.h
index a30e44318..7f8746b28 100644
--- a/src/runtime/c/pgf/expr.h
+++ b/src/runtime/c/pgf/expr.h
@@ -226,4 +226,7 @@ PGF_API_DECL void
pgf_print_expr_tuple(size_t n_exprs, PgfExpr exprs[], PgfPrintContext* ctxt,
GuOut* out, GuExn* err);
+PGF_API prob_t
+pgf_compute_tree_probability(PgfPGF *gr, PgfExpr expr);
+
#endif /* EXPR_H_ */