/usr/include/libgoffice-0.8/goffice/math/go-fft.h is in libgoffice-0.8-dev 0.8.17-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | #ifndef GOFFICE_FFT_H
#define GOFFICE_FFT_H
#include <goffice/math/go-complex.h>
G_BEGIN_DECLS
void go_fourier_fft (go_complex const *in, int n, int skip, go_complex **fourier, gboolean inverse);
#ifdef GOFFICE_WITH_LONG_DOUBLE
void go_fourier_fftl (go_complexl const *in, int n, int skip, go_complexl **fourier, gboolean inverse);
#endif
G_END_DECLS
#endif /* GOFFICE_FFT_H */
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