--- arprec-2.2.17/src/write.cpp.old	2016-09-21 18:25:59.872611368 -0400
+++ arprec-2.2.17/src/write.cpp	2016-09-21 18:26:30.604696356 -0400
@@ -196,6 +196,6 @@
 
   string str = to_string(precision, width, expn_width, 
       fmt, showpos, uppercase, fill);
-  return (s << str) != 0;
+  return (!(s << str).fail());
 }