commit 9d6128acdccb463edfe9a3b7dbf86417643104bb
author Dave Hylands <dhylands@gmail.com> Mon Aug 31 15:43:31 2015 -0700
committer Paul Sokolovsky <pfalcon@users.sourceforge.net> Fri Sep 11 23:09:50 2015 +0300
tree 95adbe8770ad1fc7c818136d5bc0d5abe62d76a7
parent e79c6b6312a85a50d113346144d58fa62cb4adc2

stmhal: fix single precision float printing error

Fixes #1435.

py/formatfloat.c

diff --git a/py/formatfloat.c b/py/formatfloat.c
index cc06361..a801055 100644
--- a/py/formatfloat.c
+++ b/py/formatfloat.c
@@ -142,7 +142,10 @@
         char e_sign_char = '-';
         if (num.f < 1.0F && num.f >= 0.9999995F) {
             num.f = 1.0F;
-            first_dig = '1';
+            if (e > 1) {
+                // numbers less than 1.0 start with 0.xxx
+                first_dig = '1'; 
+            }
             if (e == 0) {
                 e_sign_char = '+';
             }

tests/float/float_array.py

diff --git a/tests/float/float_array.py b/tests/float/float_array.py
index c0f2c58..033877d 100644
--- a/tests/float/float_array.py
+++ b/tests/float/float_array.py
@@ -12,3 +12,5 @@
 
 test(array('f'))
 test(array('d'))
+
+print('{:.4f}'.format(array('f', b'\xcc\xcc\xcc=')[0]))