/*====================================================
 * Return taxed experience from player sd to guild
 *---------------------------------------------------*/
unsigned int guild_payexp(struct map_session_data *sd,unsigned int exp) {
    struct guild *g;
    struct guild_expcache *c;
    int per;
 
    nullpo_ret(sd);
 
    if (!exp) return 0;
 
    if (sd->status.guild_id == 0 ||
        (g = sd->guild) == NULL ||
        (per = guild_getposition(g,sd)) < 0 ||
        (per = g->position[per].exp_mode) < 1)
        return 0;
 
 
    if (per < 100)
        exp = exp * per / 100;
    //Otherwise tax everything.
 
    c = db_data2ptr(guild_expcache_db->ensure(guild_expcache_db, db_i2key(sd->status.char_id), create_expcache, sd));
 
    if (c->exp > UINT64_MAX - exp)
        c->exp = UINT64_MAX;
    else
        c->exp += exp;
 
    return exp;
}
 
/*====================================================
 * Player sd pay a tribute experience to his guild
 * Add this experience to guild exp
 * [Celest]
 *---------------------------------------------------*/
int guild_getexp(struct map_session_data *sd,int exp) {
    struct guild_expcache *c;
    nullpo_ret(sd);
 
    if (sd->status.guild_id == 0 || sd->guild == NULL)
        return 0;
 
    c = db_data2ptr(guild_expcache_db->ensure(guild_expcache_db, db_i2key(sd->status.char_id), create_expcache, sd));
    if (c->exp > UINT64_MAX - exp)
        c->exp = UINT64_MAX;
    else
        c->exp += exp;
    return exp;
}