DPQmpfr-package: DPQ (Density, Probability, Quantile) Distribution...

In DPQmpfr: DPQ (Density, Probability, Quantile) Distribution Computations using MPFR

Description

An extension to the 'DPQ' package with computations for 'DPQ' (Density (pdf), Probability (cdf) and Quantile) functions, where the functions here partly use the 'Rmpfr' package and hence the underlying 'MPFR' and 'GMP' C libraries.

Details

The DESCRIPTION file: This package was not yet installed at build time.
Index: This package was not yet installed at build time.

Author(s)

Martin Maechler [aut, cre] (<https://orcid.org/0000-0002-8685-9910>)

Maintainer: Martin Maechler <[e-mail]>

See Also

Packages DPQ, Rmpfr are both used by this package.

Examples

## An example how mpfr-numbers  "just work" with reasonable R functions:
.srch <- search() ; doAtt <- is.na(match("Rmpfr:package", .srch))
if(doAtt) require(Rmpfr)
nu.s <- 2^seqMpfr(mpfr(-30, 64), mpfr(100, 64), by = 1/mpfr(4, 64))
b0 <- DPQ::b_chi(nu.s)
b1 <- DPQ::b_chi(nu.s, one.minus=TRUE)
stopifnot(inherits(b0,"mpfr"), inherits(b1, "mpfr"),
          b0+b1 == 1,  diff(log(b1)) < 0)
plot(nu.s,          log(b1),  type="l", log="x")
plot(nu.s[-1], diff(log(b1)), type="l", log="x")
if(doAtt) # detach the package(s) we've attached above
  for(pkg in setdiff(search(), .srch)) detach(pkg, character.only=TRUE)

DPQmpfr documentation built on May 18, 2021, 1:10 a.m.