def testLogical (self):
"Test logical_and, logical_or, sometrue, alltrue"
x = MA.array([1,1,0,0])
y = MA.array([1,0,1,0])
assert eq(MA.logical_and (x,y), [1,0,0,0])
assert eq(MA.logical_or (x,y), [1,1,1,0])
assert MA.sometrue(x)
assert not MA.sometrue(MA.zeros((3,)))
assert MA.alltrue(MA.ones((3,)))
assert not MA.alltrue(x)
