DEPRECATED.
Produces a standard-form representation of the model. Returns
the coefficient matrix (A), the cost vector (c), and the
constraint vector (b), where the ‘standard form’ problem is
\[\begin{split}\min/\max\ & c'x \\
s.t.\ & Ax = b \\
& x >= 0\end{split}\]
All three returned values are instances of the array.array
class, and store Python floats (C doubles).
Deprecated since version 6.7.3: to_standard_form() is deprecated. Please use WriterFactory(‘compile_standard_form’) (will be removed in (or after) 6.8.0)