1 files changed, 2 insertions, 0 deletions
diff --git a/ratio.c b/ratio.c
index eea0b9a..92e39d8 100644
--- a/ratio.c
+++ b/ratio.c
@@ -129,6 +129,8 @@ rational power(rational r, unsigned int p){
 	return s;
 }
 
+double inv_exptype_to_double(int r){ return 1.0/((double)r); }
+
 double valuetype_to_double(rational r){
 	double i;
 	if(r.s) { i=-1.0; } else { i=1.0; }