log1mexp

<p>numeric vector of positive values.</p>

<p>Compute  f(a) = log(1 - exp(-a))   quickly and numerically accurately.</p>

math

Computations for approximations and alternatives for the 'DPQ'
(Density (pdf), Probability (cdf) and Quantile) functions for probability
distributions in R.
Primary focus is on (central and non-central) beta, gamma and related
distributions such as the chi-squared, F, and t.
--
This is for the use of researchers in these numerical approximation
implementations, notably for my own use in order to improve R`s own
pbeta(), qgamma(), ..., etc: {'"dpq"'-functions}.
-- We plan to complement with 'DPQmpfr' to be suggested later.

Martin Maechler

Density, Probability, Quantile ('DPQ') Computations

log1mexp: Compute f(a) = \(\mathrm{log}\)(1 - \(\mathrm{exp}\)(-a)) Numerically Optimally

Description

Usage

Arguments

References

See Also