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java.lang.Object | +--jnt.FFT.RealDoubleFFT | +--jnt.FFT.RealDoubleFFT_Even
Computes FFT's of real, double precision data when n is even, by computing complex FFT.
Constructor Summary | |
RealDoubleFFT_Even(int n)
Create an FFT for transforming n points of real, double precision data. |
Method Summary | |
void |
backtransform(double[] data)
Compute the (unnomalized) inverse FFT of data, leaving it in place. |
void |
backtransform(double[] data,
int i0,
int stride)
Compute the (unnomalized) inverse FFT of data, leaving it in place. |
void |
inverse(double[] data)
Compute the (nomalized) inverse FFT of data, leaving it in place. |
void |
inverse(double[] data,
int i0,
int stride)
Compute the (nomalized) inverse FFT of data, leaving it in place. |
double |
normalization()
Return the normalization factor. |
double[] |
toWraparoundOrder(double[] data)
Return data in wraparound order. |
double[] |
toWraparoundOrder(double[] data,
int i0,
int stride)
Return data in wraparound order. |
void |
transform(double[] data)
Compute the Fast Fourier Transform of data leaving the result in data. |
void |
transform(double[] data,
int i0,
int stride)
Compute the Fast Fourier Transform of data leaving the result in data. |
Methods inherited from class jnt.FFT.RealDoubleFFT |
checkData |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
public RealDoubleFFT_Even(int n)
Method Detail |
public void transform(double[] data)
public double[] toWraparoundOrder(double[] data)
public double[] toWraparoundOrder(double[] data, int i0, int stride)
public void backtransform(double[] data)
public void transform(double[] data, int i0, int stride)
public void backtransform(double[] data, int i0, int stride)
public void inverse(double[] data, int i0, int stride)
public double normalization()
public void inverse(double[] data)
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