1 files changed, 2 insertions, 0 deletions
diff --git a/double.h b/double.h
index 7b23791..707e1e6 100644
--- a/double.h
+++ b/double.h
@@ -27,6 +27,8 @@ double power(double,double);
 
 double valuetype_to_double(double);
 
+double inv_exptype_to_double(double);
+
 int to_string(char*,double);
 
 int root_to_string(char*,double,double);