Fix dropping of zeros on integers

1 files changed, 2 insertions, 2 deletions

diff --git a/mathlib.py b/mathlib.py
index 55f7807..9f7a301 100644
--- a/mathlib.py
+++ b/mathlib.py
@@ -137,7 +137,7 @@ class MathLib:
             return (digits, exp)
 
         i = len(digits) - 1
-        while digits[i] == 0 and i > 0:
+        while digits[i] == 0 and i > 0 and exp > 0:
             i -= 1
             exp -= 1
 
@@ -260,7 +260,7 @@ if __name__ == "__main__":
     print 'is_int(%.18e): %s' % (val, ml.is_int(val))
     val = ml.d(0.99999999999999878)**2
     print 'is_int(%s): %s' % (val, ml.is_int(val))
-    vals = ('0.1230', '12.34', '0.0123')
+    vals = ('0.1230', '12.34', '0.0123', '1230', '123.0', '1.230e17')
     for valstr in vals:
         val = ml.d(valstr)
         print 'Formatted value: %s (from %s)' % (ml.format_number(val), valstr)