From 217e571a19c9d643005d8c8d88abab16f88735a2 Mon Sep 17 00:00:00 2001
From: Tim Peters <tim.peters@gmail.com>
Date: Mon, 27 Jan 2003 23:51:11 +0000
Subject: [PATCH] decode_long():  Simplified the "is it negative?" test.

---
 Lib/pickletools.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index 5c0367be0f..dec533d492 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -590,14 +590,17 @@ def decode_long(data):
     -256L
     >>> decode_long("\x00\x80")
     -32768L
-    >>> 
+    >>> decode_long("\x80")
+    -128L
+    >>> decode_long("\x7f")
+    127L
     """
     x = 0L
     i = 0L
     for c in data:
         x |= long(ord(c)) << i
         i += 8L
-    if i and (x & (1L << (i-1L))):
+    if data and ord(c) >= 0x80:
         x -= 1L << i
     return x
 
-- 
2.40.0