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https://github.com/UpsilonNumworks/Upsilon.git
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88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
#include "quartic_model.h"
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#include <math.h>
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#include <assert.h>
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#include "../../poincare/include/poincare_layouts.h"
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using namespace Poincare;
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namespace Regression {
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ExpressionLayout * QuarticModel::layout() {
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static ExpressionLayout * layout = nullptr;
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if (layout == nullptr) {
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const ExpressionLayout * layoutChildren[] = {
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new CharLayout('a', KDText::FontSize::Small),
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new CharLayout(Ion::Charset::MiddleDot, KDText::FontSize::Small),
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new CharLayout('X', KDText::FontSize::Small),
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new VerticalOffsetLayout(
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new CharLayout('4', KDText::FontSize::Small),
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VerticalOffsetLayout::Type::Superscript,
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false),
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new CharLayout('+', KDText::FontSize::Small),
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new CharLayout('b', KDText::FontSize::Small),
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new CharLayout(Ion::Charset::MiddleDot, KDText::FontSize::Small),
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new CharLayout('X', KDText::FontSize::Small),
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new VerticalOffsetLayout(
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new CharLayout('3', KDText::FontSize::Small),
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VerticalOffsetLayout::Type::Superscript,
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false),
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new CharLayout('+', KDText::FontSize::Small),
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new CharLayout('c', KDText::FontSize::Small),
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new CharLayout(Ion::Charset::MiddleDot, KDText::FontSize::Small),
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new CharLayout('X', KDText::FontSize::Small),
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new VerticalOffsetLayout(
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new CharLayout('2', KDText::FontSize::Small),
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VerticalOffsetLayout::Type::Superscript,
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false),
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new CharLayout('+', KDText::FontSize::Small),
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new CharLayout('d', KDText::FontSize::Small),
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new CharLayout(Ion::Charset::MiddleDot, KDText::FontSize::Small),
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new CharLayout('X', KDText::FontSize::Small),
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new CharLayout('+', KDText::FontSize::Small),
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new CharLayout('e', KDText::FontSize::Small),
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};
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layout = new HorizontalLayout(layoutChildren, 20, false);
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}
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return layout;
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}
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double QuarticModel::evaluate(double * modelCoefficients, double x) const {
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double a = modelCoefficients[0];
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double b = modelCoefficients[1];
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double c = modelCoefficients[2];
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double d = modelCoefficients[3];
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double e = modelCoefficients[4];
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return a*x*x*x*x+b*x*x*x+c*x*x+d*x+e;
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}
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double QuarticModel::levelSet(double * modelCoefficients, double y) const {
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return NAN;
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}
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double QuarticModel::partialDerivate(double * modelCoefficients, int derivateCoefficientIndex, double x) const {
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if (derivateCoefficientIndex == 0) {
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// Derivate: x^4
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return x*x*x*x;
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}
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if (derivateCoefficientIndex == 1) {
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// Derivate: x^3
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return x*x*x;
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}
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if (derivateCoefficientIndex == 2) {
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// Derivate: x^2
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return x*x;
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}
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if (derivateCoefficientIndex == 3) {
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// Derivate: x
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return x;
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}
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if (derivateCoefficientIndex == 4) {
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// Derivate: 1
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return 1;
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}
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assert(false);
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return 0.0;
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}
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}
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