RUMP_F_FSOUT
#define RUMP_F_FSINOUT (RUMP_F_FSIN | RUMP_F_FSOUT)
#define RUMP__FCNW(c, t) RUMP__FCN(RUMP_F_FSOUT, (c), (int)sizeof(t))
#define RUMP__FCNW_FSPRIV(f, c, t) RUMP__FCN_FSPRIV(RUMP_F_FSOUT, (f), (c), (int)sizeof(t))