isdigit          5164 src/simh/scp.c     if (isdigit((unsigned char)gnumver[0])) {
isdigit          7457 src/simh/scp.c return (c & 0x80) ? 0 : isdigit (c);
isdigit          2224 src/simh/sim_tmxr.c         if (!isdigit((unsigned char)*cptr)) {