# naginterfaces.library.machine.precision¶

naginterfaces.library.machine.precision()[source]

precision returns , the value machine precision.

For full information please refer to the NAG Library document for x02aj

https://www.nag.com/numeric/nl/nagdoc_27.3/flhtml/x02/x02ajf.html

Returns
epsfloat

, the value machine precision.

Notes

precision returns machine precision, computed as , where is the arithmetic base (see model_base()) and is the number of significant base- digits (see model_digits()).

It is important to note that the definition of here differs from that in ISO Fortran 95 (1997).

References

ISO Fortran 95, 1997, ISO Fortran 95 programming language, (ISO/IEC 1539–1:1997)