ref: 0a5f275112d871f18435dbe76294c11d5f99ecf9
dir: /h/smoother.h/
typedef struct{ SPFLOAT smooth; SPFLOAT a1, b0, y0, psmooth; SPFLOAT onedsr; }sp_smoother; int sp_smoother_create(sp_smoother **p); int sp_smoother_destroy(sp_smoother **p); int sp_smoother_init(sp_data *sp, sp_smoother *p); int sp_smoother_compute(sp_data *sp, sp_smoother *p, SPFLOAT *in, SPFLOAT *out); int sp_smoother_reset(sp_data *sp, sp_smoother *p, SPFLOAT *in);