#include <piecewise_linear_function.h>

Public Member Functions
	FloatSlopePiecewiseLinearFunction ()=default

	FloatSlopePiecewiseLinearFunction (absl::InlinedVector< int64_t, 8 > x_anchors, absl::InlinedVector< int64_t, 8 > y_anchors)

	FloatSlopePiecewiseLinearFunction (FloatSlopePiecewiseLinearFunction &&other) noexcept

FloatSlopePiecewiseLinearFunction &	operator= (FloatSlopePiecewiseLinearFunction &&other) noexcept

std::string	DebugString (absl::string_view line_prefix={}) const

const absl::InlinedVector< int64_t, 8 > &	x_anchors () const

const absl::InlinedVector< int64_t, 8 > &	y_anchors () const

int64_t	ComputeInBoundsValue (int64_t x) const

int64_t	ComputeConvexValue (int64_t x) const

Static Public Attributes
static const int	kNoValue = -1
	FloatSlopePiecewiseLinearFunction.

Detailed Description

The following class defines a piecewise linear formulation with potential double values for the slope of each linear function. This formulation is meant to be used with a small number of segments (see InlinedVector sizes below). These segments are determined by int64_t values for the "anchor" x and y values, such that (x_anchors_[i], y_anchors_[i]) and (x_anchors_[i+1], y_anchors_[i+1]) are respectively the start and end point of the i-th segment.

Todo: (user): Adjust the inlined vector sizes based on experiments.

Definition at line 287 of file piecewise_linear_function.h.

Constructor & Destructor Documentation

◆ FloatSlopePiecewiseLinearFunction() [1/3]

operations_research::FloatSlopePiecewiseLinearFunction::FloatSlopePiecewiseLinearFunction ( )

default

◆ FloatSlopePiecewiseLinearFunction() [2/3]

operations_research::FloatSlopePiecewiseLinearFunction::FloatSlopePiecewiseLinearFunction	(	absl::InlinedVector< int64_t, 8 >	x_anchors,
		absl::InlinedVector< int64_t, 8 >	y_anchors )

Definition at line 815 of file piecewise_linear_function.cc.

◆ FloatSlopePiecewiseLinearFunction() [3/3]

operations_research::FloatSlopePiecewiseLinearFunction::FloatSlopePiecewiseLinearFunction ( FloatSlopePiecewiseLinearFunction && other )

inlinenoexcept

Definition at line 294 of file piecewise_linear_function.h.

Member Function Documentation

◆ ComputeConvexValue()

int64_t operations_research::FloatSlopePiecewiseLinearFunction::ComputeConvexValue ( int64_t x ) const

Computes the y value associated to 'x'. Unlike ComputeInBoundsValue(), if 'x' is outside the bounds of the function, the function will still be defined by its outer segments.

Definition at line 841 of file piecewise_linear_function.cc.

◆ ComputeInBoundsValue()

int64_t operations_research::FloatSlopePiecewiseLinearFunction::ComputeInBoundsValue ( int64_t x ) const

Computes the y value associated to 'x'. Returns kNoValue if 'x' is out of bounds, i.e. lower than the first x_anchor and largest than the last.

Definition at line 834 of file piecewise_linear_function.cc.

◆ DebugString()

std::string operations_research::FloatSlopePiecewiseLinearFunction::DebugString ( absl::string_view line_prefix = {} ) const

Definition at line 824 of file piecewise_linear_function.cc.

◆ operator=()

FloatSlopePiecewiseLinearFunction & operations_research::FloatSlopePiecewiseLinearFunction::operator= ( FloatSlopePiecewiseLinearFunction && other )

inlinenoexcept

Definition at line 299 of file piecewise_linear_function.h.