149   F32 elevation = 0;  in open()  local
160           if (fread((void*)&elevation, 4, 1, file) == 1)  in open()
162             if (elevation != nodata)  in open()
164               if (header.max_z < elevation) header.max_z = elevation;  in open()
165               if (header.min_z > elevation) header.min_z = elevation;  in open()
186             elevation = (F32)elev;  in open()
187             if (elevation != nodata)  in open()
189               if (header.max_z < elevation) header.max_z = elevation;  in open()
190               if (header.min_z > elevation) header.min_z = elevation;  in open()
214             elevation = (F32)elev;  in open()
215             if (elevation != nodata)  in open()
217               if (header.max_z < elevation) header.max_z = elevation;  in open()
218               if (header.min_z > elevation) header.min_z = elevation;  in open()
239             elevation = (F32)elev;  in open()
240             if (elevation != nodata)  in open()
242               if (header.max_z < elevation) header.max_z = elevation;  in open()
243               if (header.min_z > elevation) header.min_z = elevation;  in open()
267             elevation = (F32)(rgb[0]);  in open()
268             if (elevation != nodata)  in open()
270               if (header.max_z < elevation) header.max_z = elevation;  in open()
271               if (header.min_z > elevation) header.min_z = elevation;  in open()
292             elevation = (F32)(rgb[0]);  in open()
293             if (elevation != nodata)  in open()
295               if (header.max_z < elevation) header.max_z = elevation;  in open()
296               if (header.min_z > elevation) header.min_z = elevation;  in open()
642   F32 elevation;  in read_point_default()  local
655         if (fread((void*)&elevation, 4, 1, file) != 1)  in read_point_default()
679         elevation = (F32)elev;  in read_point_default()
697         elevation = (F32)elev;  in read_point_default()
712         elevation = (F32)elev;  in read_point_default()
730         elevation = rgb[0];  in read_point_default()
745         elevation = rgb[0];  in read_point_default()
749     if (elevation != nodata)  in read_point_default()
753       point.set_z(elevation);  in read_point_default()