xx0              1120 ext/gd/libgd/gd_topal.c   INT32 xx0, xx1;		/* distance increments */
xx0              1171 ext/gd/libgd/gd_topal.c       xx0 = inc0;
xx0              1195 ext/gd/libgd/gd_topal.c 	  dist0 += xx0;
xx0              1196 ext/gd/libgd/gd_topal.c 	  xx0 += 2 * STEP_C0 * STEP_C0;