Function incrbyfloatCommand

src/t_string.cpp:643–674

}

void incrbyfloatCommand(client *c) {
    long double incr, value;
    robj *o, *newObj;

    o = lookupKeyWrite(c->db,c->argv[1]);
    if (checkType(c,o,OBJ_STRING)) return;
    if (getLongDoubleFromObjectOrReply(c,o,&value,NULL) != C_OK ||
        getLongDoubleFromObjectOrReply(c,c->argv[2],&incr,NULL) != C_OK)
        return;

    value += incr;
    if (std::isnan(value) || std::isinf(value)) {
        addReplyError(c,"increment would produce NaN or Infinity");
        return;
    }
    newObj = createStringObjectFromLongDouble(value,1);
    if (o)
        dbOverwrite(c->db,c->argv[1],newObj);
    else
        dbAdd(c->db,c->argv[1],newObj);
    signalModifiedKey(c,c->db,c->argv[1]);
    notifyKeyspaceEvent(NOTIFY_STRING,"incrbyfloat",c->argv[1],c->db->id);
    g_pserver->dirty++;
    addReplyBulk(c,newObj);

    /* Always replicate INCRBYFLOAT as a SET command with the final value
     * in order to make sure that differences in float precision or formatting
     * will not create differences in replicas or after an AOF restart. */
    rewriteClientCommandArgument(c,0,shared.set);
    rewriteClientCommandArgument(c,2,newObj);
    rewriteClientCommandArgument(c,3,shared.keepttl);
}

void appendCommand(client *c) {
    size_t totlen;