int user_add_to_desc(void *user, int *desc_size, char **desc)
Before a node description is sent to the TM, the user can provide a
pointer to a data structure that will be appended to the description
for later use by the user in reconstruction of the node. This
information must be placed into *desc. Its size should be
returned in *desc_size.
There is only one default option: the description to be added is considered to be of zero length, i.e., there is no additional description.
|void *user||IN||Pointer to the user-defined LP data structure.|
|int *desc_size||OUT||The size of the additional information, the length of *desc in bytes.|
|char **desc||OUT||Pointer to the additional information (space must be allocated by the user).|
|USER_ERROR||Error. DEFAULT is used.|
|USER_SUCCESS||User filled out *desc_size and *desc.|
|USER_DEFAULT||No description is appended.|