matplotlib Code

typedef struct {
   int N_size;
   int N_filled;
   int N_good;
   int N_added;
   int i_oldest;
   int i_next;
   int *i_sorted;
   double *data;
   double sum;
   double sumsq;
} ringbuf_t;


ringbuf_t *new_ringbuf(int N);
void zero_ringbuf(ringbuf_t *rb_ptr);
void delete_ringbuf(ringbuf_t *rb_ptr);
int ringbuf_index(ringbuf_t *rb_ptr, int i);
int ringbuf_slice_i(ringbuf_t *rb_ptr, int i);
double ringbuf_getitem(ringbuf_t *rb_ptr, int i);

void ringbuf_add(ringbuf_t *rb_ptr, double d);
double ringbuf_min(ringbuf_t *rb_ptr);
double ringbuf_max(ringbuf_t *rb_ptr);
double ringbuf_median(ringbuf_t *rb_ptr);
int ringbuf_N_added(ringbuf_t *rb_ptr);
int ringbuf_N_filled(ringbuf_t *rb_ptr);
int ringbuf_N_good(ringbuf_t *rb_ptr);
double ringbuf_mean(ringbuf_t *rb_ptr);
double ringbuf_sd(ringbuf_t *rb_ptr);

void c_runstats(int nrb, int nd, double *data, double *dmean, double *dstd,
                double *dmin, double *dmax, double *dmed, int *ng);
void c_runstats2(int nrb, int nd, int step, int ofs,
                 double *data, double *dmean, double *dstd,
                 double *dmin, double *dmax, double *dmed, int *ng);