19 static int coincident_line(const Quadratic& quad, Quadratic& reduction) {  in coincident_line()  argument
20     reduction[0] = reduction[1] = quad[0];  in coincident_line()
25         Quadratic& reduction) {  in vertical_line()  argument
27     reduction[0] = quad[0];  in vertical_line()
28     reduction[1] = quad[2];  in vertical_line()
32     int smaller = reduction[1].y > reduction[0].y;  in vertical_line()
36         if (reduction[smaller].y > yExtrema) {  in vertical_line()
37             reduction[smaller].y = yExtrema;  in vertical_line()
38         } else if (reduction[larger].y < yExtrema) {  in vertical_line()
39             reduction[larger].y = yExtrema;  in vertical_line()
46         Quadratic& reduction) {  in horizontal_line()  argument
48     reduction[0] = quad[0];  in horizontal_line()
49     reduction[1] = quad[2];  in horizontal_line()
53     int smaller = reduction[1].x > reduction[0].x;  in horizontal_line()
57         if (reduction[smaller].x > xExtrema) {  in horizontal_line()
58             reduction[smaller].x = xExtrema;  in horizontal_line()
59         }  else if (reduction[larger].x < xExtrema) {  in horizontal_line()
60             reduction[larger].x = xExtrema;  in horizontal_line()
67         int minX, int maxX, int minY, int maxY, Quadratic& reduction) {  in check_linear()  argument
81     reduction[0] = quad[0];  in check_linear()
82     reduction[1] = quad[2];  in check_linear()
122         reduction[replace] = extrema;  in check_linear()
142 int reduceOrder(const Quadratic& quad, Quadratic& reduction, ReduceOrder_Styles reduceStyle) {  in reduceOrder()  argument
171             return coincident_line(quad, reduction);  in reduceOrder()
173         return vertical_line(quad, reduceStyle, reduction);  in reduceOrder()
176         return horizontal_line(quad, reduceStyle, reduction);  in reduceOrder()
178     int result = check_linear(quad, reduceStyle, minX, maxX, minY, maxY, reduction);  in reduceOrder()
182     memcpy(reduction, quad, sizeof(Quadratic));  in reduceOrder()