73 #define BRESINITPGON(dy, x1, x2, xStart, d, m, m1, incr1, incr2) { \  argument
85             m1 = m - 1; \
86             incr1 = -2 * dx + 2 * (dy) * m1; \
91             m1 = m + 1; \
92             incr1 = 2 * dx - 2 * (dy) * m1; \
99 #define BRESINCRPGON(d, minval, m, m1, incr1, incr2) { \  argument
100     if (m1 > 0) { \
102             minval += m1; \
111             minval += m1; \
131     int m, m1;                  /* slope and slope+1 */  member
137                      bres.m, bres.m1, bres.incr1, bres.incr2)
140         BRESINCRPGON(bres.d, bres.minor, bres.m, bres.m1, bres.incr1, bres.incr2)