From: Stefan Krah <skrah@bytereef.org>
Date: Wed, 18 Apr 2012 15:57:56 +0000 (+0200)
Subject: Support mythical ones' complement machines.
X-Git-Tag: v3.3.0a3~165
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6369f77d2006d878cd5e360d9b41c0a85fe74403;p=python

Support mythical ones' complement machines.
---

diff --git a/Modules/_decimal/libmpdec/mpdecimal.c b/Modules/_decimal/libmpdec/mpdecimal.c
index f0ebca887e..b456db42e2 100644
--- a/Modules/_decimal/libmpdec/mpdecimal.c
+++ b/Modules/_decimal/libmpdec/mpdecimal.c
@@ -1340,7 +1340,7 @@ mpd_qget_ssize(const mpd_t *a, uint32_t *status)
     if (u <= MPD_SSIZE_MAX) {
         return isneg ? -((mpd_ssize_t)u) : (mpd_ssize_t)u;
     }
-    else if (isneg && u-1 == MPD_SSIZE_MAX) {
+    else if (isneg && u+(MPD_SSIZE_MIN+MPD_SSIZE_MAX) == MPD_SSIZE_MAX) {
         return MPD_SSIZE_MIN;
     }