ref: 4717f3fcc1523ee0e7e7b85273d6c5dd5bf192a3
dir: /h/blsaw.h/
typedef struct {
void *ud;
int argpos;
SPFLOAT *args[2];
SPFLOAT *freq;
SPFLOAT *amp;
} sp_blsaw;
int sp_blsaw_create(sp_blsaw **p);
int sp_blsaw_destroy(sp_blsaw **p);
int sp_blsaw_init(sp_data *sp, sp_blsaw *p);
int sp_blsaw_compute(sp_data *sp, sp_blsaw *p, SPFLOAT *in, SPFLOAT *out);