mhn: The Modified Half-Normal Distribution

Provides density, distribution, quantile, and random generation functions for the Modified Half-Normal (MHN) distribution, along with moments, mode, and the Fox-Wright Psi function used as the normalizing constant. The MHN distribution arises as a conditional posterior in Bayesian MCMC and generalizes the half-normal, truncated normal, and square-root gamma distributions. Implements efficient sampling via the Sun, Kong & Pal (2023) <doi:10.1080/03610926.2021.1934700> algorithms and the Gao & Wang (2025) <doi:10.1080/03610918.2025.2524551> RTDR method.

Version:	0.1.0
Depends:	R (≥ 4.0.0)
Imports:	stats, Rcpp (≥ 1.0.7)
LinkingTo:	Rcpp, BH (≥ 1.78.0-0)
Suggests:	testthat (≥ 3.0.0), knitr, rmarkdown, bench, Rmpfr
Published:	2026-05-27
DOI:	10.32614/CRAN.package.mhn
Author:	Tomotaka Momozaki [aut, cre]
Maintainer:	Tomotaka Momozaki <momozaki.stat at gmail.com>
BugReports:	https://github.com/t-momozaki/mhn/issues
License:	MIT + file LICENSE
URL:	https://github.com/t-momozaki/mhn, https://t-momozaki.github.io/mhn/
NeedsCompilation:	yes
SystemRequirements:	C++17
Citation:	mhn citation info
Materials:	README, NEWS
CRAN checks:	mhn results

Documentation:

Reference manual:	mhn.html , mhn.pdf
Vignettes:	Introduction to the mhn Package (source, R code) Theoretical background of the mhn package (source, R code)

Downloads:

Package source:	mhn_0.1.0.tar.gz
Windows binaries:	r-devel: mhn_0.1.0.zip, r-release: mhn_0.1.0.zip, r-oldrel: mhn_0.1.0.zip
macOS binaries:	r-release (arm64): mhn_0.1.0.tgz, r-oldrel (arm64): mhn_0.1.0.tgz, r-release (x86_64): mhn_0.1.0.tgz, r-oldrel (x86_64): mhn_0.1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=mhn to link to this page.