Fourier Transform

Functions
cvec	it_fft (cvec v)
cvec	it_ifft (cvec v)
cvec	cvec_fft_conv (cvec a, cvec b)
cvec	cvec_fft_corr (cvec a, cvec b)
cvec	cvec_fft_autocorr (cvec a)
cvec	it_fzt (cvec v, cplx z)
cvec	it_dft (cvec v)
cvec	it_idft (cvec v)
cvec	it_dft_real (vec v)
vec	it_idft_real (cvec v)

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Detailed Description

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Function Documentation

cvec cvec_fft_autocorr

(

cvec

a

)

Definition at line 536 of file fourier.c.

References _fft(), _ifft(), cplx_0, cvec_abssqr(), cvec_clone(), cvec_div_by_real(), cvec_length(), cvec_set_length, fft_init(), and intlog2().

Referenced by main().

cvec cvec_fft_conv	(	cvec	a,
		cvec	b
	)

Definition at line 458 of file fourier.c.

References _fft(), _ifft(), cplx_0, cvec_clone(), cvec_delete(), cvec_div_by_real(), cvec_length(), cvec_mul(), cvec_set_length, fft_init(), and intlog2().

Referenced by main().

cvec cvec_fft_corr	(	cvec	a,
		cvec	b
	)

Definition at line 497 of file fourier.c.

References _fft(), _ifft(), cplx_0, cvec_clone(), cvec_conj_mul(), cvec_delete(), cvec_div_by_real(), cvec_length(), cvec_set_length, fft_init(), and intlog2().

Referenced by main().

cvec it_dft

(

cvec

v

)

Definition at line 772 of file fourier.c.

References cvec_clone(), cvec_length(), cvec_new(), DFT_LAST, FDFT_FORW, intlog2(), it_fdft(), it_fft(), and it_sdft().

Referenced by it_dft_real(), and main().

cvec it_dft_real

(

vec

v

)

Definition at line 822 of file fourier.c.

References cvec_delete(), it_dft(), and vec_to_cvec().

Referenced by main().

cvec it_fft

(

cvec

v

)

Definition at line 421 of file fourier.c.

References _fft(), _fft_demangle(), cvec_clone(), cvec_length(), fft_init(), and intlog2().

Referenced by it_dft(), and main().

cvec it_fzt	(	cvec	v,
		cplx	z
	)

Definition at line 567 of file fourier.c.

References _fft(), _ifft(), cang(), cimag, cinv(), cmul(), cnorm(), cplx_0, cplx_1, creal, cscale(), cvec_delete(), cvec_length(), cvec_mul(), cvec_new(), cvec_new_zeros(), cvec_set_length, fft_init(), _cplx_::i, intlog2(), and _cplx_::r.

Referenced by main().

cvec it_idft

(

cvec

v

)

Definition at line 797 of file fourier.c.

References cvec_clone(), cvec_length(), cvec_new(), DFT_LAST, FDFT_BACK, intlog2(), it_fdft(), it_ifft(), and it_sidft().

Referenced by it_idft_real(), and main().

vec it_idft_real

(

cvec

v

)

Definition at line 832 of file fourier.c.

References creal, cvec_delete(), cvec_length(), it_idft(), and vec_new().

Referenced by main().

cvec it_ifft

(

cvec

v

)

Definition at line 439 of file fourier.c.

References _ifft(), _ifft_mangle(), cvec_clone(), cvec_div_by_real(), cvec_length(), fft_init(), and intlog2().

Referenced by it_idft().