def graph_implementation(arg_objs, shape, data=None):
"""Multiply the expressions elementwise.
Parameters
----------
arg_objs : list
LinExpr for each argument.
shape : tuple
The shape of the resulting expression.
data :
Additional data required by the atom.
Returns
-------
tuple
(LinOp for objective, list of exprraints)
"""
# promote if necessary.
lhs = arg_objs[0]
rhs = arg_objs[1]
if lu.is_const(lhs):
return (lu.multiply(lhs, rhs), [])
elif lu.is_const(rhs):
return (lu.multiply(rhs, lhs), [])
else:
raise DCPError("Product of two non-constant expressions is not "
"DCP.")
def graph_implementation(arg_objs, shape, data=None):
"""Multiply the linear expressions.
Parameters
----------
arg_objs : list
LinExpr for each argument.
shape : tuple
The shape of the resulting expression.
data :
Additional data required by the atom.
Returns
-------
tuple
(LinOp for objective, list of constraints)
"""
# Promote shapes for compatibility with CVXCanon
lhs = arg_objs[0]
rhs = arg_objs[1]
if lu.is_const(lhs):
return (lu.mul_expr(lhs, rhs, shape), [])
elif lu.is_const(rhs):
return (lu.rmul_expr(lhs, rhs, shape), [])
else:
raise DCPError("Product of two non-constant expressions is not "
"DCP.")
