base64decode     1717 ext/nkf/nkf1.7/nkf.c     t1 = 0x3f & base64decode(c1);
base64decode     1718 ext/nkf/nkf1.7/nkf.c     t2 = 0x3f & base64decode(c2);
base64decode     1719 ext/nkf/nkf1.7/nkf.c     t3 = 0x3f & base64decode(c3);
base64decode     1720 ext/nkf/nkf1.7/nkf.c     t4 = 0x3f & base64decode(c4);