AAL_LAB 969 ext/gd/libgd/gd.c p_dist = fabs ((float) ((Ay_Cy * im->AAL_Bx_Ax) - (Ax_Cx * im->AAL_By_Ay)) / im->AAL_LAB); AAL_LAB 249 ext/gd/libgd/gd.h float AAL_LAB;