This function determines values for `z`

, whence they have not
been specified by the user.

`SocpPhase2(f, A, b, N, x, control)`

f

`vector`

: the parameters of the objective function in
its primal form.

A

`matrix`

; the parameter matrix of the cone constraints.

b

`vector`

: the parameter vector of the cone constraints.

N

`vector`

: the count of rows pertinent to each cone constraint.

x

`vector`

: initial point of SOCP in its primal form.

control

`list`

: the list of control parameters for SOCP.

A vector with the initial point for `z`

(dual form of
SOCP).

Lobo, M. and Vandenberghe, L. and Boyd, S., *SOCP: Software for
Second-order Cone Programming, User's Guide*, Beta Version, April
1997, Stanford University.