Tolerance< T > Class Template Reference

- Main Page
- Modules
- Classes
- Namespaces
- Files
- Related Pages

- Class List
- Class Index
- Class Hierarchy
- Class Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
List of all members | Static Public Member Functions
Tolerance< T > Class Template Reference
Miscellaneous Tools

## 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>`

## 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.