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Add range test

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Add range test
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Theo Arends 2019-05-18 18:40:13 +02:00
parent 052cfbc11d
commit d6d56618dc
1 changed files with 2 additions and 1 deletions
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sonoff/support.ino
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@ -684,12 +684,13 @@ double TaylorLog(double x)
{ {
// https://stackoverflow.com/questions/46879166/finding-the-natural-logarithm-of-a-number-using-taylor-series-in-c // https://stackoverflow.com/questions/46879166/finding-the-natural-logarithm-of-a-number-using-taylor-series-in-c
if (x <= 0.0) { return NAN; }
double z = (x + 1) / (x - 1); // We start from power -1, to make sure we get the right power in each iteration; double z = (x + 1) / (x - 1); // We start from power -1, to make sure we get the right power in each iteration;
double step = ((x - 1) * (x - 1)) / ((x + 1) * (x + 1)); // Store step to not have to calculate it each time double step = ((x - 1) * (x - 1)) / ((x + 1) * (x + 1)); // Store step to not have to calculate it each time
double totalValue = 0; double totalValue = 0;
double powe = 1; double powe = 1;
double y; double y;
for (int count = 0; count < 10; count++) { for (int count = 0; count < 10; count++) { // Experimental number of 10 iterations
z *= step; z *= step;
y = (1 / powe) * z; y = (1 / powe) * z;
totalValue = totalValue + y; totalValue = totalValue + y;