model::Parameter source file More...

#include <algorithm>
#include <cmath>
#include <iostream>
#include <numeric>
#include <vector>
#include "DOFHandler.h"

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Classes
class	Parameter
	Model Parameter. More...
struct	InputParameter
	Handles the properties of input parameters. More...

Functions
double	linear_interpolate (double x, const std::vector< double > &xs, const std::vector< double > &ys)
	Linearly interpolate y(x) from a table of break points.
double	linear_interpolate_slope (double x, const std::vector< double > &xs, const std::vector< double > &ys)
	Local slope dy/dx of the piecewise-linear table used by linear_interpolate.

Detailed Description

model::Parameter source file

Function Documentation

◆ linear_interpolate()

double linear_interpolate	(	double	x,
		const std::vector< double > &	xs,
		const std::vector< double > &	ys )

Linearly interpolate y(x) from a table of break points.

Outside [xs.front(), xs.back()], the value is clamped to the nearest endpoint of ys (flat extrapolation).

Parameters

x	Value to evaluate the table at
xs	Break points (at least 2 entries, strictly increasing; use a pair of break points an epsilon apart to approximate a step change instead of a literal duplicate)
ys	Values at each break point (same size as xs)

Returns: Interpolated (or boundary-clamped) value

Exceptions

std::runtime_error if xs has fewer than 2 entries, xs and ys differ in length, or xs is not strictly increasing

◆ linear_interpolate_slope()

double linear_interpolate_slope	(	double	x,
		const std::vector< double > &	xs,
		const std::vector< double > &	ys )

Local slope dy/dx of the piecewise-linear table used by linear_interpolate.

Outside [xs.front(), xs.back()], the table is flat (see linear_interpolate), so the slope is 0 there. At an interior break point, the slope of the segment to its right is used.