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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 <doi:10.1145/363707.363723>, Neumaier (1974) sum <doi:10.1002/zamm.19740540106>, pairwise-sum (adapted from 'NumPy', See Castaldo (2008) <doi:10.1137/070679946> for a discussion of accuracy), and arbitrary precision sum (adapted from the fsum in 'Python' ; Shewchuk (1997) <http://www.cs.berkeley.edu/~jrs/papers/robustr.pdf>). In addition, products are changed to long double precision for accuracy, or changed into a log-sum for accuracy.

copied from cf-staging / r-precisesums
Type Size Name Uploaded Downloads Labels
conda 50.3 kB | win-64/r-precisesums-0.7-r44h11b023d_0.conda  6 months and 4 days ago 181 main
conda 49.9 kB | win-64/r-precisesums-0.7-r43h11b023d_0.conda  6 months and 4 days ago 195 main
conda 46.5 kB | osx-64/r-precisesums-0.7-r43h199b6f9_0.conda  6 months and 4 days ago 166 main
conda 46.9 kB | osx-64/r-precisesums-0.7-r44h199b6f9_0.conda  6 months and 4 days ago 143 main
conda 46.7 kB | linux-64/r-precisesums-0.7-r43h2b5f3a1_0.conda  6 months and 4 days ago 660 main
conda 47.8 kB | linux-64/r-precisesums-0.7-r44h2b5f3a1_0.conda  6 months and 4 days ago 659 main

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