37 lines
957 B
C
37 lines
957 B
C
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#include "circsim.h"
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#include <string.h>
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static const int gateL[9] = { 0, 2, 1, 1, 0, 2, 2, 1, 0 };
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static const int gateR[9] = { 2, 2, 2, 2, 0, 1, 2, 1, 0 };
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void circsim(int gates, int *gatepins, int *states, int streamlen, int *stream) {
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for (; streamlen-- > 0; stream++) {
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int i;
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states[0] = *stream;
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for (i = 0; i < gates; i++) {
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int k = 3*states[gatepins[2*i+1]] + states[gatepins[2*i+2]];
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states[2*i+1] = gateL[k];
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states[2*i+2] = gateR[k];
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}
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*stream = states[gatepins[0]];
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}
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}
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int findcirc(int gates, int *gatepins, int streamlen, int *stream, int *output) {
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int states[2*gates+1];
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memset(states, 0, sizeof(int) * (2*gates+1));
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for (; streamlen-- > 0; stream++) {
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int i;
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states[0] = *stream;
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for (i = 0; i < gates; i++) {
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int k = 3*states[gatepins[2*i+1]] + states[gatepins[2*i+2]];
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states[2*i+1] = gateL[k];
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states[2*i+2] = gateR[k];
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}
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if (*output++ != states[gatepins[0]]) return 0;
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}
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return 1;
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}
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