From f55cf10101800139fdfd5155f0097fc47bd5a514 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Thu, 29 May 2014 15:01:49 +0100
Subject: py: Implement bignum '&' with negatives on lhs and rhs.

Needs proper coverage testing.  Doesn't implement -ve & -ve.
Addresses issue #611.
---
 tests/basics/int-big-and.py | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'tests')

diff --git a/tests/basics/int-big-and.py b/tests/basics/int-big-and.py
index 75fbd5288..a48848dbf 100644
--- a/tests/basics/int-big-and.py
+++ b/tests/basics/int-big-and.py
@@ -2,7 +2,23 @@ print(0 & (1 << 80))
 print(0 & (1 << 80) == 0)
 print(bool(0 & (1 << 80)))
 
-#a = 0xfffffffffffffffffffffffffffff
-#print(a & (1 << 80))
-#print((a & (1 << 80)) >> 80)
-#print((a & (1 << 80)) >> 80 == 1)
+a = 0xfffffffffffffffffffffffffffff
+print(a & (1 << 80))
+print((a & (1 << 80)) >> 80)
+print((a & (1 << 80)) >> 80 == 1)
+
+# test negative on rhs
+a = 123456789012345678901234567890
+print(a & -1)
+print(a & -2)
+print(a & -2345678901234567890123456789)
+print(a & (-a))
+
+# test negative on lhs
+a = 123456789012345678901234567890
+print(-1 & a)
+print(-2 & a)
+print(-2345678901234567890123456789 & a)
+print((-a) & a)
+print((-a) & 0xffffffff)
+print((-a) & 0xffffffffffffffffffffffffffffffff)
-- 
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