-
Notifications
You must be signed in to change notification settings - Fork 21
/
fft4g.h
24 lines (20 loc) · 945 Bytes
/
fft4g.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
// FFT functions
void cdft(int n, int isgn, double *a, int *ip, double *w);
void rdft(int n, int isgn, double *a, int *ip, double *w);
void ddct(int n, int isgn, double *a, int *ip, double *w);
void ddst(int n, int isgn, double *a, int *ip, double *w);
void dfct(int n, double *a, double *t, int *ip, double *w);
void dfst(int n, double *a, double *t, int *ip, double *w);
// Auxiliary functions
void makewt(int nw, int *ip, double *w);
void bitrv2(int n, int *ip, double *a);
void bitrv2conj(int n, int *ip, double *a);
void cftfsub(int n, double *a, double *w);
void cftbsub(int n, double *a, double *w);
void makect(int nc, int *ip, double *c);
void rftfsub(int n, double *a, int nc, double *c);
void rftbsub(int n, double *a, int nc, double *c);
void dctsub(int n, double *a, int nc, double *c);
void dstsub(int n, double *a, int nc, double *c);
void cft1st(int n, double *a, double *w);
void cftmdl(int n, int l, double *a, double *w);