From f5a83863e86192b1a9a47ea84eb95d4dbbdb9dd6 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 20 Feb 2020 20:06:25 +0000
Subject: [PATCH] stop at end of mask index

---
 src/ieee754/part_mul_add/partpoints.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ieee754/part_mul_add/partpoints.py b/src/ieee754/part_mul_add/partpoints.py
index efc55e41..e138490b 100644
--- a/src/ieee754/part_mul_add/partpoints.py
+++ b/src/ieee754/part_mul_add/partpoints.py
@@ -18,7 +18,7 @@ def make_partition(mask, width):
     mlen = mask.shape()[0]
     ppos = mlen
     midx = 0
-    while ppos < width-1: # -1, ignore last bit
+    while ppos < width and midx < mlen: # -1, ignore last bit
         ppoints[ppos] = mask[midx]
         ppos += mlen
         midx += 1
-- 
2.30.2