kazu
4f511d907e
needed interface changes [new options] logger for android wifi-ap-optimization new test-cases
51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
#ifndef TRIANGLE_H
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#define TRIANGLE_H
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#include <cmath>
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#include <random>
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#include "../Random.h"
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#include "../../Assertions.h"
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#include "Normal.h"
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namespace Distribution {
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/**
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* distribution that forms a triangle
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* sigma defines the width (from mu to 0.0, half the width of the triangle's base)
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* all values outside of the triangle are zero
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*/
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template <typename T> class Triangle {
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private:
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const T mu;
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const T sigma;
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const T area;
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public:
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/** ctor */
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Triangle(const T mu, const T sigma) : mu(mu), sigma(sigma), area(sigma*sigma) {
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}
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/** get probability for the given value */
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T getProbability(const T val) const {
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const T diff = std::abs(val - mu);
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if (diff > sigma) {return 0;} // outside of triangle
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return (sigma - diff) / area; // inside the triangle
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}
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/** get the probability for the given value */
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static T getProbability(const T mu, const T sigma, const T val) {
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Triangle<T> dist(mu, sigma);
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return dist.getProbability(val);
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}
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};
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}
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#endif // TRIANGLE_H
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