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Just another update

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Ingy döt Net 2015-02-20 00:35:01 -05:00
parent a25938f123
commit 00a190b0a6
6591 changed files with 94363 additions and 23227 deletions
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18
Task/Universal-Turing-machine/Mathematica/universal-turing-machine-1.math Normal file
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left = 1; right = -1; stay = 0;
cmp[s_] := ToExpression[StringSplit[s, ","]];
utm[rules_, initial_, head_] :=
Module[{tape = initial, rh = head, n = 1},
Clear[nxt];
nxt[state_, field_] :=
nxt[state, field] = Position[rules, {rules[[state, 5]], field, _, _, _}][[1, 1]];
n = Position[rules, {rules[[n, 1]], BitGet[tape, rh], _, _, _}][[1,1]];
While[rules[[n, 4]] != 0,
If[rules[[n, 3]] != BitGet[tape, rh],
If[rules[[n, 3]] == 1, tape = BitSet[tape, rh],
tape = BitClear[tape, rh]]];
rh = rh + rules[[n, 4]];
If[rh < 0, rh = 0; tape = 2*tape];
n = nxt[n, BitGet[tape, rh]];
]; {tape, rh}
];
];