Tolerance< T > Class Template Reference

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Detailed Description

template<class T>
class lemon::Tolerance< T >

Tolerance is a class to provide a basic way to handle the comparison of numbers that are obtained as a result of a probably inexact computation.

The general implementation is suitable only if the data type is exact, like the integer types, otherwise a specialized version must be implemented. These specialized classes like Tolerance<double> may offer additional tuning parameters.

See also:

Tolerance<float>

Tolerance<double>

Tolerance<long double>

#include <lemon/tolerance.h>

List of all members.

Static Public Member Functions
static Value	zero ()
	Returns the zero value.
Comparisons
The concept is that these bool functions return true only if the related comparisons hold even if some numerical error appeared during the computations.
static bool	less (Value a, Value b)
	Returns true if a is surely strictly less than b.
static bool	different (Value a, Value b)
	Returns true if a is surely different from b.
static bool	positive (Value a)
	Returns true if a is surely positive.
static bool	negative (Value a)
	Returns true if a is surely negative.
static bool	nonZero (Value a)
	Returns true if a is surely non-zero.