islower           648 kern/tty.c     	if (ISSET(tp->t_oflag, OLCUC) && islower(c))
islower           119 lib/libsa/stand.h #define isalpha(c)	(isupper(c)||islower(c))
islower           121 lib/libsa/stand.h #define toupper(c)	(islower(c)?((c) - 'a' + 'A'):(c))