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Bitcoin AttackerSuccessProbability
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| #include <math.h> | |
| double AttackerSuccessProbability(double q, int z){ | |
| double p = 1.0 - q; | |
| double lambda = z * (q / p); | |
| double sum = 1.0; | |
| int i, k; | |
| for (k = 0; k <= z; k++){ | |
| double poisson = exp(-lambda); | |
| for (i = 1; i <= k; i++)poisson *= lambda / i; | |
| sum -= poisson * (1 - pow(q / p, z - k)); | |
| } | |
| return sum; | |
| } |
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