def _entry(self, i, j):
if self.diagonal_length is not None:
if Ge(i, self.diagonal_length) is S.true:
return S.Zero
elif Ge(j, self.diagonal_length) is S.true:
return S.Zero
eq = Eq(i, j)
if eq is S.true:
return self.arg[i, i]
elif eq is S.false:
return S.Zero
return self.arg[i, j]*KroneckerDelta(i, j)
def test_Relational():
assert mcode(Eq(x, y)) == "x == y"
assert mcode(Ne(x, y)) == "x != y"
assert mcode(Le(x, y)) == "x <= y"
assert mcode(Lt(x, y)) == "x < y"
assert mcode(Gt(x, y)) == "x > y"
assert mcode(Ge(x, y)) == "x >= y"
