Plan 9 from Bell Labs’s /usr/web/sources/contrib/maht/inferno/module/short_fft.m

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Distributed under the MIT License.
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Rp : con 0;
Gp : con 1;
Bp : con 2;

# short_fft.b

FFT : module {
	PATH : con "/dis/lib/short_fft.dis";

	Complexes : adt {
		r : array of real;
		j : array of real;
		bit_reverse : fn(c : self ref Complexes);
		fft : fn(c : self ref Complexes, dir : int, m : int);
		interpolate : fn(c : self ref Complexes, x : ref Complexes, ratio : real);
		print : fn(c : self ref Complexes, labelr, labeli : string);
		save : fn(c : self ref Complexes, fd : ref Sys->FD, directory : string, frame : big, x, y : int) : ref Sys->FD;
	};
	
	init: fn(nil: ref Draw->Context, nil: list of string);
	C_from_ints : fn(ints : array of int, maxvalue :real) : ref Complexes;
	C_from_reals : fn(reals : array of real) : ref Complexes;
	C_from_file : fn(filename : string, num_channels, channel_no: int) : ref Complexes;

};

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