#ifndef FFT_FP_REALISATION_H
#define FFT_FP_REALISATION_H

#include <stdint.h>

#ifndef DATA_L
#define DATA_L (1 << 16)
#endif

#ifndef FP_acc
#define FP_acc 1000
#endif

#ifndef TWIDDLE_L
#define TWIDDLE_L (DATA_L / 2)
#endif

#ifndef PI
#define PI 3.141592653589793238462643383279502884197169399375105820974944
#endif

#ifdef FFT_FP_EXTERNAL_TWIDDLES
extern int64_t twiddle_re[TWIDDLE_L];
extern int64_t twiddle_im[TWIDDLE_L];
#endif

void fft_twiddle_gen(int64_t* twiddle_re, int64_t* twiddle_im);
void fft_fp_prepare(void);
void FFT_fp(int64_t* inp, uint32_t inp_L, int64_t* buf);

#endif