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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 44.1 kB | linux-64/r-precisesums-0.3-r40hcdcec82_1.tar.bz2  4 years and 7 months ago 2818 main
conda 49.5 kB | win-64/r-precisesums-0.3-r35hda5aaf8_0.tar.bz2  4 years and 10 months ago 1056 main cf202003
conda 50.9 kB | win-64/r-precisesums-0.3-r36hda5aaf8_0.tar.bz2  4 years and 10 months ago 1054 main cf202003
conda 42.5 kB | osx-64/r-precisesums-0.3-r35h17f1fa6_0.tar.bz2  4 years and 10 months ago 317 main cf202003
conda 44.2 kB | linux-64/r-precisesums-0.3-r36hcdcec82_0.tar.bz2  4 years and 10 months ago 3054 main cf202003
conda 43.8 kB | linux-64/r-precisesums-0.3-r35hcdcec82_0.tar.bz2  4 years and 10 months ago 3091 main cf202003

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