22 lines
441 B
C++
22 lines
441 B
C++
#include <eqpalg/distribution/box_cox.h>
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namespace distribution {
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double box_cox(double y, double c, double lambda) {
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if (lambda == 0) {
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return std::log(y + c);
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} else {
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return (pow(y + c, lambda) - 1.0) / lambda;
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}
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}
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double box_cox_reverse(double y, double c, double lambda) {
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if (lambda == 0) {
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return std::exp(y) - c;
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} else {
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return pow((1 + lambda * y), lambda / 1) - c;
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}
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}
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} // namespace distribution
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