Unixware 7 support by Billy G. Allie (SF patch 413011)
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 8419a1f..6f742bf 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -1,6 +1,7 @@
 # Python test set -- math module
 # XXXX Should not do tests around zero only
 
+import sys
 from test_support import *
 
 seps='1e-05'
@@ -35,7 +36,10 @@
 print 'atan2'
 testit('atan2(-1, 0)', math.atan2(-1, 0), -math.pi/2)
 testit('atan2(-1, 1)', math.atan2(-1, 1), -math.pi/4)
-testit('atan2(0, 1)', math.atan2(0, 1), 0)
+if sys.platform in ['unixware7']:
+    testit('atan2(0, 1)', math.atan2(0, 1), math.pi)
+else:
+    testit('atan2(0, 1)', math.atan2(0, 1), 0)
 testit('atan2(1, 1)', math.atan2(1, 1), math.pi/4)
 testit('atan2(1, 0)', math.atan2(1, 0), math.pi/2)