is.pseudoprime: Check an integer for pseudo-primality to an arbitrary...

In modiscloud: R tools for processing Level 2 Cloud Mask products from MODIS

Description

A number is pseudo-prime if it is probably prime, the basis of which is the probabilistic Fermat test; if it passes two such tests, the chances are better than 3 out of 4 that n is prime.

Usage

  is.pseudoprime(n, times)

Arguments

n	the integer to test for pseudoprimality.
times	the number of Fermat tests to perform

Details

This is an example function for making R packages and R documentation with roxygen2 and roxygenize.

Value

Whether the number is pseudoprime

Author(s)

Nicholas J. Matzke [e-mail]

References

Abelson, Hal; Jerry Sussman, and Julie Sussman. Structure and Interpretation of Computer Programs. Cambridge: MIT Press, 1984.

See Also

fermat.test

Examples

is.pseudoprime(13, 4)# TRUE most of the time

Example output

Loading required package: date
Loading required package: sp
Loading required package: sfsmisc
Loading required package: raster
Loading required package: rgdal
rgdal: version: 1.5-18, (SVN revision 1082)
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 3.0.4, released 2020/01/28
Path to GDAL shared files: /usr/share/gdal
GDAL binary built with GEOS: TRUE 
Loaded PROJ runtime: Rel. 6.3.1, February 10th, 2020, [PJ_VERSION: 631]
Path to PROJ shared files: /usr/share/proj
Linking to sp version:1.4-4
To mute warnings of possible GDAL/OSR exportToProj4() degradation,
use options("rgdal_show_exportToProj4_warnings"="none") before loading rgdal.
[1] TRUE

modiscloud documentation built on May 2, 2019, 5:16 a.m.