Mirrors ParamConeProg.split_solution in
cone_matrix_stuffing.py:282-302.
split_solution(param_prog, sltn, active_vars = NULL)A named list mapping as.character(var_id) to a numeric
array of the variable's shape.
A ParamConeProg.
Numeric vector of length x_length -- the primal x
from the conic forward solve.
Optional character vector of variable ids to restrict the output to. Default: all variables.