Function SCIPincludeHeurBasic 

pub unsafe extern "C" fn SCIPincludeHeurBasic(
    scip: *mut SCIP,
    heur: *mut *mut SCIP_HEUR,
    name: *const c_char,
    desc: *const c_char,
    dispchar: c_char,
    priority: c_int,
    freq: c_int,
    freqofs: c_int,
    maxdepth: c_int,
    timingmask: SCIP_HEURTIMING,
    usessubscip: c_uint,
    heurexec: Option<unsafe extern "C" fn(scip: *mut SCIP, heur: *mut SCIP_HEUR, heurtiming: SCIP_HEURTIMING, nodeinfeasible: c_uint, result: *mut SCIP_RESULT) -> SCIP_RETCODE>,
    heurdata: *mut SCIP_HEURDATA,
) -> SCIP_RETCODE

creates a primal heuristic and includes it in SCIP with its most fundamental callbacks. All non-fundamental (or optional) callbacks as, e. g., init and exit callbacks, will be set to NULL. Optional callbacks can be set via specific setter functions, see SCIPsetHeurCopy(), SCIPsetHeurFree(), SCIPsetHeurInit(), SCIPsetHeurExit(), SCIPsetHeurInitsol(), and SCIPsetHeurExitsol()

@note if you want to set all callbacks with a single method call, consider using SCIPincludeHeur() instead