bertini::algorithm::SharpeningConfig Struct Reference

Configuration for sharpening computed solutions. More...

#include <config.hpp>

Public Types
using	T = NumErrorT
	The numeric (error) type.

Public Attributes
unsigned	sharpendigits = 0
	how many digits should be correct after sharpening. 0 = do not sharpen, which is Bertini 1's default. Initialized, so that a default-constructed config has a default worth documenting: reading an uninitialized member is undefined, and a configuration reference cannot print what the library never decided (b2#406).
T	function_residual_tolerance = Eigen::NumTraits<T>::dummy_precision()
	A polynomial (or any function, really) evaluated at a point is considered to be 0 if the magnitude is smaller than this value. See also RatioTolerance. Note that this value depends on the current default precision when this scruct is constructed..
T	ratio_tolerance = T(99)/T(100)
	A computed value is considered to be zero if the ratio of two different approximations is smaller than this value. See also FunctionTolerance.

Detailed Description

Configuration for sharpening computed solutions.

Member Typedef Documentation

T

using bertini::algorithm::SharpeningConfig::T = NumErrorT

The numeric (error) type.

Member Data Documentation

function_residual_tolerance

T bertini::algorithm::SharpeningConfig::function_residual_tolerance = Eigen::NumTraits<T>::dummy_precision()

A polynomial (or any function, really) evaluated at a point is considered to be 0 if the magnitude is smaller than this value. See also RatioTolerance. Note that this value depends on the current default precision when this scruct is constructed..

ratio_tolerance

T bertini::algorithm::SharpeningConfig::ratio_tolerance = T(99)/T(100)

A computed value is considered to be zero if the ratio of two different approximations is smaller than this value. See also FunctionTolerance.

sharpendigits

unsigned bertini::algorithm::SharpeningConfig::sharpendigits = 0

how many digits should be correct after sharpening. 0 = do not sharpen, which is Bertini 1's default. Initialized, so that a default-constructed config has a default worth documenting: reading an uninitialized member is undefined, and a configuration reference cannot print what the library never decided (b2#406).