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dfactorial

Arithmetic Operators

Description

double factorial function

Usage

ldfactorial(x)

dfactorial(x)

Arguments

x

a numeric scalar or vector

Value

dfactorial(x) returns the double factorial, that is x\!\! = 1 * 3 * 5 * … * x and ldfactorial(x) is the natural logarithm of it.

Author(s)

See Also

Examples

dfactorial(1:10)
phangorn

Phylogenetic Reconstruction and Analysis

v2.7.0
GPL (>= 2)
Authors
Klaus Schliep [aut, cre] (<https://orcid.org/0000-0003-2941-0161>), Emmanuel Paradis [aut] (<https://orcid.org/0000-0003-3092-2199>), Leonardo de Oliveira Martins [aut] (<https://orcid.org/0000-0001-5247-1320>), Alastair Potts [aut], Tim W. White [aut], Cyrill Stachniss [ctb], Michelle Kendall [ctb], Keren Halabi [ctb], Richel Bilderbeek [ctb], Kristin Winchell [ctb], Liam Revell [ctb], Mike Gilchrist [ctb], Jeremy Beaulieu [ctb], Brian O'Meara [ctb], Long Qu [ctb]
Initial release

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