PreciseSums: Accurate Floating Point Sums and Products
Version 0.3

Most of the time floating point arithmetic does approximately the right thing. When adding sums or having products of numbers that greatly differ in magnitude, the floating point arithmetic may be incorrect. This package implements the Kahan (1965) sum , Neumaier (1974) sum , pairwise-sum (adapted from 'NumPy', See Castaldo (2008) for a discussion of accuracy), and arbitrary precision sum (adapted from the fsum in 'Python' ; Shewchuk (1997) ). In addition, products are changed to long double precision for accuracy, or changed into a log-sum for accuracy.

Vignettes Man pages API and functions Files

Package details
Author	Matthew Fidler [aut, cre, cph], Raymond Hettinger [cph, aut], Jonathan Shewchuk [cph, aut], Julian Taylor [cph, aut], Nathaniel Smith [cph, aut], NumPy Team [cph], Python Team [cph]
Date of publication	2018-04-12 17:03:06 UTC
Maintainer	Matthew Fidler <[email protected]>
License	GPL (>= 2)
Version	0.3
Package repository	View on CRAN
Installation	Install the latest version of this package by entering the following in R: `install.packages("PreciseSums")`