pairwiseSum: Return an accurate floating point sum of values
In PreciseSums: Accurate Floating Point Sums and Products
pairwiseSum R Documentation
Return an accurate floating point sum of values
Description
This was taken by NumPy and adapted for use here. It is more
accurate than a standard sum, but still has numerical issues. Its
main benefit is that it is about the same amount of time as a
standard time with the added accuracy.
Usage
pairwiseSum(numbers)
Arguments
numbers
A vector of numbers to sum.
Value
A sum of numbers with a rounding error of O(lg n) instead
of O(n).
Author(s)
Matthew Fidler (R implementation), Julian Taylor, Nathaniel
J Smith, and NumPy team.
#' @examples
sum(c(1,1e100,1,-1e100)) ## Should be 2, gives 0
pairwiseSum(c(1,1e100,1,-1e100)) ## Should be 2, still 0
References
PreciseSums documentation built on April 22, 2023, 1:13 a.m.
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| pairwiseSum | R Documentation |
Return an accurate floating point sum of values
Description
This was taken by NumPy and adapted for use here. It is more accurate than a standard sum, but still has numerical issues. Its main benefit is that it is about the same amount of time as a standard time with the added accuracy.
Usage
pairwiseSum(numbers)
Arguments
numbers |
A vector of numbers to sum. |
Value
A sum of numbers with a rounding error of O(lg n) instead of O(n).
Author(s)
Matthew Fidler (R implementation), Julian Taylor, Nathaniel J Smith, and NumPy team. #' @examples sum(c(1,1e100,1,-1e100)) ## Should be 2, gives 0 pairwiseSum(c(1,1e100,1,-1e100)) ## Should be 2, still 0
References
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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