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int user_receive_feasible_solution(void *user, int msgtag, double cost,
int numvars, int *indices, double *values)
Feasible solutions can be sent and/or stored in a user-defined packed form if desired. For instance, the TSP, a tour can be specified simply as a permutation, rather than as a list of variable indices. In the LP process, a feasible solution is packed either by the user or by a default packing routine. If the default packing routine was used, the msgtag will be FEASIBLE_SOLUTION_NONZEROS. In this case, cost, numvars, indices and values will contain the solution value, the number of nonzeros in the feasible solution, and their user indices and values. The user has only to interpret and store the solution. Otherwise, when msgtag is FEASIBLE_SOLUTION_USER, SYMPHONY will send and receive the solution value only and the user has to unpack exactly what she has packed in the LP process. In this case the contents of the last three arguments are undefined.
