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#ifndef GRAGL_H
#define GRAGL_H
typedef struct {
double x;
double y;
} Point2d;
typedef struct {
double v;
char valid;
} Scalar;
typedef struct {
unsigned width;
unsigned height;
Scalar (*func)(double);
unsigned n_func;
double from;
double to;
double step;
} Plot2d;
typedef struct {
Plot2d * plots;
unsigned n;
unsigned padding;
} Plot2dGroup;
Plot2dGroup * create_plot2d_group(int num_args, ...);
void free_plot2d_group(Plot2dGroup *);
void plot(Plot2dGroup *);
#endif
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