From 65e1e0e4ba0909a45f410a24360e97568e2bb66a Mon Sep 17 00:00:00 2001
From: wrwrwr <git@wr.waw.pl>
Date: Sat, 1 Oct 2016 21:44:38 +0200
Subject: BUG: Fix array printing with precision=0.

Values rounding to zero were formatted with negative precision.
---
 numpy/core/arrayprint.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'numpy/core/arrayprint.py')

diff --git a/numpy/core/arrayprint.py b/numpy/core/arrayprint.py
index b05082e9d..cd618d72a 100644
--- a/numpy/core/arrayprint.py
+++ b/numpy/core/arrayprint.py
@@ -626,9 +626,12 @@ class FloatFormat(object):
 
 
 def _digits(x, precision, format):
-    s = format % x
-    z = s.rstrip('0')
-    return precision - len(s) + len(z)
+    if precision > 0:
+        s = format % x
+        z = s.rstrip('0')
+        return precision - len(s) + len(z)
+    else:
+        return 0
 
 
 class IntegerFormat(object):
-- 
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