LOCFSERROR       1376 ext/gd/libgd/gd_topal.c   register LOCFSERROR cur0, cur1, cur2;	/* current error or pixel value */
LOCFSERROR       1377 ext/gd/libgd/gd_topal.c   LOCFSERROR belowerr0, belowerr1, belowerr2;	/* error for pixel below cur */
LOCFSERROR       1378 ext/gd/libgd/gd_topal.c   LOCFSERROR bpreverr0, bpreverr1, bpreverr2;	/* error for below/prev col */
LOCFSERROR       1520 ext/gd/libgd/gd_topal.c 	    register LOCFSERROR bnexterr, delta;