/usr/include/bart/num/fft.h is in libbart-dev 0.4.02-2.
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 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* Copyright 2013-2014. The Regents of the University of California.
* All rights reserved. Use of this source code is governed by
* a BSD-style license which can be found in the LICENSE file.
*
* Authors:
* 2011, 2013 Martin Uecker <uecker@eecs.berkeley.edu>
*/
#ifndef __FFT_H
#define __FFT_H
#include <stdbool.h>
#include "misc/cppwrap.h"
// similar to fftshift but modulates in the transform domain
extern void fftmod(unsigned int N, const long dims[__VLA(N)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftmod2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// fftmod for ifft
extern void ifftmod(unsigned int N, const long dims[__VLA(N)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifftmod2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// apply scaling necessary for unitarity
extern void fftscale(unsigned int N, const long dims[__VLA(N)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftscale2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// fftshift
extern void fftshift(unsigned int N, const long dims[__VLA(N)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftshift2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// ifftshift
extern void ifftshift(unsigned int N, const long dims[__VLA(N)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifftshift2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// FFT
extern void fft(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifft(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fft2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
extern void ifft2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// centered
extern void fftc(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifftc(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftc2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
extern void ifftc2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// unitary
extern void fftu(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifftu(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftu2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
extern void ifftu2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
// unitary and centered
extern void fftuc(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void ifftuc(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src);
extern void fftuc2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
extern void ifftuc2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src);
struct operator_s;
extern const struct operator_s* fft_create(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Complex float* dst, const _Complex float* src, _Bool backwards);
extern const struct operator_s* fft_create2(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, const long ostrides[__VLA(D)], _Complex float* dst, const long istrides[__VLA(D)], const _Complex float* src, _Bool backwards);
extern const struct operator_s* fft_measure_create(unsigned int D, const long dimensions[__VLA(D)], unsigned long flags, _Bool inplace, _Bool backwards);
// interface using a plan
extern void fft_exec(const struct operator_s* plan, _Complex float* dst, const _Complex float* src);
extern void fft_free(const struct operator_s* plan);
extern void fft_set_num_threads(unsigned int n);
#include "misc/cppwrap.h"
#endif
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