********************************************************************
function: fft transform
- last mod: $Id: smallft.h,v 1.6 2000/01/22 13:28:32 xiphmont Exp $
+ last mod: $Id: smallft.h,v 1.7 2000/10/12 03:12:54 xiphmont Exp $
********************************************************************/
typedef struct {
int n;
- double *trigcache;
+ float *trigcache;
int *splitcache;
} drft_lookup;
-extern void drft_forward(drft_lookup *l,double *data);
-extern void drft_backward(drft_lookup *l,double *data);
+extern void drft_forward(drft_lookup *l,float *data);
+extern void drft_backward(drft_lookup *l,float *data);
extern void drft_init(drft_lookup *l,int n);
extern void drft_clear(drft_lookup *l);