def test_genexpr_op_genexpr(model):
m, x, y, z = model
genexpr = x**1.5 + y
assert isinstance(genexpr, GenExpr)
genexpr **= 2.2
assert isinstance(genexpr, GenExpr)
genexpr += exp(x)
assert isinstance(genexpr, GenExpr)
genexpr -= exp(x)
assert isinstance(genexpr, GenExpr)
genexpr /= log(x + 1)
assert isinstance(genexpr, GenExpr)
genexpr *= (x + y)**1.2
assert isinstance(genexpr, GenExpr)
genexpr /= exp(2)
assert isinstance(genexpr, GenExpr)
genexpr /= x + y
assert isinstance(genexpr, GenExpr)
genexpr = x**1.5 + y
assert isinstance(genexpr, GenExpr)
assert isinstance(sqrt(x) + genexpr, GenExpr)
assert isinstance(exp(x) + genexpr, GenExpr)
assert isinstance(1 / x + genexpr, GenExpr)
assert isinstance(1 / x**1.5 - genexpr, GenExpr)
assert isinstance(y / x - exp(genexpr), GenExpr)
# sqrt(2) is not a constant expression and
# we can only power to constant expressions!
with pytest.raises(NotImplementedError):
genexpr **= sqrt(2)
def test_genexpr_op_genexpr(model):
m, x, y, z = model
genexpr = x**1.5 + y
assert isinstance(genexpr, GenExpr)
genexpr **= 2.2
assert isinstance(genexpr, GenExpr)
genexpr += exp(x)
assert isinstance(genexpr, GenExpr)
genexpr -= exp(x)
assert isinstance(genexpr, GenExpr)
genexpr /= log(x + 1)
assert isinstance(genexpr, GenExpr)
genexpr *= (x + y)**1.2
assert isinstance(genexpr, GenExpr)
genexpr /= exp(2)
assert isinstance(genexpr, GenExpr)
genexpr /= x + y
assert isinstance(genexpr, GenExpr)
genexpr = x**1.5 + y
assert isinstance(genexpr, GenExpr)
assert isinstance(sqrt(x) + genexpr, GenExpr)
assert isinstance(exp(x) + genexpr, GenExpr)
assert isinstance(1/x + genexpr, GenExpr)
assert isinstance(1/x**1.5 - genexpr, GenExpr)
assert isinstance(y/x - exp(genexpr), GenExpr)
# sqrt(2) is not a constant expression and
# we can only power to constant expressions!
with pytest.raises(NotImplementedError):
genexpr **= sqrt(2)
def test_upgrade(model):
m, x, y, z = model
expr = x + y
assert isinstance(expr, Expr)
expr += exp(z)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr -= exp(z)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr /= x
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr *= sqrt(x)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr **= 1.5
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
assert isinstance(expr + exp(x), GenExpr)
assert isinstance(expr - exp(x), GenExpr)
assert isinstance(expr / x, GenExpr)
assert isinstance(expr * x**1.2, GenExpr)
assert isinstance(sqrt(expr), GenExpr)
assert isinstance(abs(expr), GenExpr)
assert isinstance(log(expr), GenExpr)
assert isinstance(exp(expr), GenExpr)
with pytest.raises(ZeroDivisionError):
expr /= 0.0
def test_upgrade(model):
m, x, y, z = model
expr = x + y
assert isinstance(expr, Expr)
expr += exp(z)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr -= exp(z)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr /= x
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr *= sqrt(x)
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
expr **= 1.5
assert isinstance(expr, GenExpr)
expr = x + y
assert isinstance(expr, Expr)
assert isinstance(expr + exp(x), GenExpr)
assert isinstance(expr - exp(x), GenExpr)
assert isinstance(expr/x, GenExpr)
assert isinstance(expr * x**1.2, GenExpr)
assert isinstance(sqrt(expr), GenExpr)
assert isinstance(abs(expr), GenExpr)
assert isinstance(log(expr), GenExpr)
assert isinstance(exp(expr), GenExpr)
with pytest.raises(ZeroDivisionError):
expr /= 0.0