using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Numerics;

using NumSharp.Core.Extensions;

namespace NumSharp.Core

{

public partial class NDArray

{

public NDArray log()

{

var logArray = new NDArray(this.dtype,this.Storage.Shape);

Array dataSysArr = this.Storage.GetData();

Array logDataSysArr = logArray.Storage.GetData();

switch (logDataSysArr)

{

case double[] logData :

{

double[] npData = dataSysArr as double[];

for (int idx = 0; idx < npData.Length;idx++)

{

logData[idx] = Math.Log(npData[idx]);

}

break;

}

case float[] logData :

{

float[] npData = dataSysArr as float[];

for (int idx = 0; idx < npData.Length;idx++)

{

// boxing necessary because Math.log just for double

logData[idx] = (float) Math.Log(npData[idx]);

}

break;

}

case Complex[] logData :

{

Complex[] npData = dataSysArr as Complex[];

for (int idx = 0; idx < npData.Length;idx++)

{

logData[idx] = Complex.Log( npData[idx]);

}

break;

}

default :

{

throw new IncorrectTypeException();

}

}

return logArray;

}

}

}