Add string printing to double.

1 files changed, 2 insertions, 0 deletions

diff --git a/double.h b/double.h
index 3f31782..d035f47 100644
--- a/double.h
+++ b/double.h
@@ -15,3 +15,5 @@ double absolute(double);
 double power(double,double);
 
 double to_double(double);
+
+double to_string(char*,double);