From 92cc7a96e696895aeb92618675c478123a73d7b4 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Fri, 26 Sep 2014 05:49:50 -0600
Subject: [PATCH] Change to lib_dtoa() to fix prescision error from trailing
 zeroes

---
 libc/stdio/lib_libdtoa.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libc/stdio/lib_libdtoa.c b/libc/stdio/lib_libdtoa.c
index a2edecf6b5..0120bafd2d 100644
--- a/libc/stdio/lib_libdtoa.c
+++ b/libc/stdio/lib_libdtoa.c
@@ -189,6 +189,10 @@ static void lib_dtoa(FAR struct lib_outstream_s *obj, int fmt, int prec,
   digits   = __dtoa(value, 3, prec, &expt, &dsgn, &rve);
   numlen   = rve - digits;
 
+  /* Avoid precision error from missing trailing zeroes */
+
+  numlen = MAX(expt, numlen);
+
   if (IS_NEGATE(flags))
     {
       obj->put(obj, '-');