7 #define M_PI 3.14159265358979323846
19 float lanc(float, float);
20 float hann(float, float);
22 int clamp(int, int, int);
24 void lopass(vc *, vc *, int, int);
25 void hipass(vc *, vc *, int, int);
27 int* prepare_lanc_kernels();
28 int *select_lanc_kernel(int*,float);
29 void free_lanc_kernels(int*);
31 vc interp(int*,vc *, int, float);