FCN
p->tval |= FCN;
#define isfcn(n) ((n)->tval & FCN)
v->tval = FCN;
{"fcntl", 4, DEC, NOV, DEC, FCN, HEX, HEX}, /* 62 */
{"fcntl", 3, DEC, NOV, DEC, FCN, HEX}, /* 0: default */
{"fcntl", 2, DEC, NOV, DEC, FCN}, /* 1: no arg */
{"fcntl", 3, DEC, NOV, DEC, FCN, FFG}, /* 2: F_SETFL */
{"fcntl", 3, DEC, NOV, DEC, FCN, FFD}, /* 3: F_SETFD */
{"fcntl", 4, DEC, NOV, DEC, FCN, DEC, FFD}, /* 4: F_DUP3FD */