Stable Numerics Subroutine Library
Programming Reference Manual
Version 1.0 DD-00006-010
5.2.14 Metrics and R  conversion
T width() const;
T midpoint() const;
T magnitude() const;
T mignitude() const;
T pivot() const;
T size() const;
T radius() const;

These functions convert the interval into a R  space representation. Given the current interval as A ∈IR  these metrics are defined as:

width()


Width of the interval a-a- .

midpoint()


Midpoint of the interval  (    )
12 a+ a-.

magnitude()


Magnitude of the interval max(|a|,| a|)  .

mignitude()


Mignitude of the interval min(|a|,| a|)  .

pivot()


Pivot of the interval √︁ -------------------
  max(|a|,| a|)min(|a|,| a|)  .

size()


Size of the interval  (      )
12 |a-|+ |a|.

radius()


Radius of the interval    (-         - )
max a-2a-a,a-- a-2a-.