46 if (*knotsIter < *(knotsIter - 1)) {
54 if (m_knots.size() - m_functions.size() != 1) {
55 throw Elements::Exception() <<
"Invalid number of knots(" << m_knots.size() <<
")-functions(" << m_functions.size()
58 auto knotsIter = m_knots.begin();
59 while (++knotsIter != m_knots.end()) {
60 if (*knotsIter < *(knotsIter - 1)) {
72 if (i < 0 || i >= static_cast<ssize_t>(
m_knots.
size())) {
114 auto prevKnotIter = knotIter - 1;
115 if (max <= *prevKnotIter) {
118 if (min < *knotIter) {
119 double down = (min > *prevKnotIter) ? min : *prevKnotIter;
120 double up = (max < *knotIter) ? max : *knotIter;
125 return direction * result;
ssize_t findKnot(double x) const
const std::vector< std::unique_ptr< Function > > & getFunctions() const
Returns the functions in the ranges between the knots.
std::unique_ptr< Function > clone() const override
double operator()(const double) const override
Piecewise(std::vector< double > knots, std::vector< std::shared_ptr< Function >> functions)
std::vector< std::unique_ptr< Function > > m_functions
A vector where the sub-functions are kept.
ELEMENTS_API double integrate(const Function &function, const double min, const double max, std::unique_ptr< NumericalIntegrationScheme > numericalIntegrationScheme=nullptr)
T back_inserter(T...args)
std::vector< double > m_knots
A vector where the knots are kept.
Represents a piecewise function.
double integrate(const double x1, const double x2) const override