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arts/flow/fft.h

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873 B

#ifndef ARTS_FFT_H
#define ARTS_FFT_H
/*
* BC - tqStatus (2002-03-08): arts_fft_float
*
* This fft interface should be obsoleted in the future in favour of one
* exploiting the capabilities of gsl fully. However, it will be kept binary
* compatible to avoid everybody to reimplement/duplicate their own fft.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* performs an fft
*/
void arts_fft_float (
unsigned NumSamples, /* must be a power of 2 */
int InverseTransform, /* 0=forward FFT, 1=inverse FFT */
float *RealIn, /* array of input's real samples */
float *ImaginaryIn, /* array of input's imag samples */
float *RealOut, /* array of output's reals */
float *ImaginaryOut ); /* array of output's imaginaries */
#ifdef __cplusplus
}
#endif
#endif /* ARTS_FFT_H */