Exported from Notepad++

function weightedAverageRoutine(x_n, offset)
{
    // The number of samples to average is equal to the number of taps in the filter's 
    // impulse response
    var Taps = filterTapsGenerator();
    var N = Taps.length;
    
    // Calculate the position of the first sample in the window
    var start = offset - N;

    if (start < 0)
    {
        // Until enough samples have been received, no average can be calculated
        var Y_n = NaN;
    }
    else
    {
        // Initialize Y_n to 0
        var Y_n = 0;
        
        // Once enough samples have been received, calculate the weighted average of all 
        // the samples in the window
        for (var i=0; i<N; i++)
        {
            // The signal samples within the window are multiplied by the corresponding 
            // filter tap
            Y_n += x_n[i+start] * Taps[i];
        }
    }
    
    // Return the moving average
    return Y_n;
}