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Essential libraries for the Protelis language

There is a newer version: 17.7.1

module protelis:coord:nonselfstabilizing:accumulation
import protelis:coord:spreading
import protelis:coord:accumulation

/**
 * Gossip a value manipulated according to f.
 *
 * @param sink  bool, whether the device is the root of the spanning tree
 * @param value T, what to gossip
 * @param f     (T, T) -> T, how to manipulate value
 * @return      T, the value resulting from gossip
 */
public def cossip(sink, value, f) {
    summarize(sink, f, value, value)
}

/**
 * Gossip a value manipulated according to f.
 *
 * @param value T, what to gossip
 * @param f     (T, T) -> T, how to manipulate value
 * @return      T the value resulting from gossip
 */
public def gossip(value, f) {
    rep (v <- value) {
        f.apply(value, hood((a, b) -> { f.apply(a, b) }, value, nbr(v)))
    }
}

/**
 * Gossip a value manipulated according to f.
 *
 * @param value T, what to gossip
 * @param f     (T, T) -> T, how to manipulate value
 * @return      T the value resulting from gossip
 */
public def Gossip(value, f) {
    G(false, value, nbrRange, (v) -> { f.apply(v, value) })
}

/**
 * Gossip whether the device has ever experienced a given condition.
 *
 * @param a bool, condition
 * @return  bool, true if the device has experienced the condition, false otherwise
 */
public def gossipEver(a) {
    rep (ever <- false) {
        a || anyHood(nbr(ever))
    }
}