// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Wunderbit Trading

//@version=4
strategy("MACD Strategy", overlay=true, pyramiding=2, commission_type=strategy.commission.percent, commission_value=0.04, initial_capital=100,  default_qty_type = strategy.cash, default_qty_value = 100, currency = currency.USD)

// FUNCTIONS

Ema(src,p) =>
    ema = 0.
    sf = 2/(p+1)
    ema := nz(ema[1] + sf*(src - ema[1]),src)