ref: b7ec8469463c8de77f733578f9b874a8771529ed
dir: /a.h/
typedef struct Chart Chart; typedef struct Price Price; struct Price { Tm date; double open; double close; double high; double low; }; enum { Maxprices = 1024, }; struct Chart { Price prices[Maxprices]; usize nprices; double ymin; double ymax; };