ZS ma(I d,J n){ZJ p=0x700000;p+=d?0:n;R mmap(d?0:p-n,n,0x7,…
ZS ma(I d,J n){ZJ p=0x700000;p+=d?0:n;R mmap(d?0:p-n,n,0x7,d?2:0x22,d?d:-1,0);}ZS mf(S s,J*n){J b[18];I d=open(s,0);Qs(0>d,s)R fstat(d,b),s=(*n=b[6])?ma(d,*n):s,close(d),s;}
ZS ma(I d,J n){ZJ p=0x700000;p+=d?0:n;R mmap(d?0:p-n,n,0x7,d?2:0x22,d?d:-1,0);}ZS mf(S s,J*n){J b[18];I d=open(s,0);Qs(0>d,s)R fstat(d,b),s=(*n=b[6])?ma(d,*n):s,close(d),s;}