diff options
Diffstat (limited to 'src/fftsg.h')
| -rw-r--r-- | src/fftsg.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/fftsg.h b/src/fftsg.h new file mode 100644 index 0000000..eb7fc8a --- /dev/null +++ b/src/fftsg.h @@ -0,0 +1,21 @@ +/* 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); |