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is.whole

Whole ("Integer") Numbers

Description

Check which elements of x[] are integer valued aka “whole” numbers,including MPFR numbers (class mpfr).

Usage

## S3 method for class 'mpfr'
is.whole(x)

Arguments

x

any R vector, here of class mpfr.

Value

logical vector of the same length as x, indicating where x[.] is integer valued.

Author(s)

Martin Maechler

See Also

is.integer(x) (base package) checks for the internal mode or class, not if x[i] are integer valued.

The is.whole() methods in package gmp.

Examples

is.integer(3) # FALSE, it's internally a double
 is.whole(3)   # TRUE
 x <- c(as(2,"mpfr") ^ 100, 3, 3.2, 1000000, 2^40)
 is.whole(x) # one FALSE, only
Rmpfr

R MPFR - Multiple Precision Floating-Point Reliable

v0.8-4
GPL (>= 2)
Authors
Martin Maechler [aut, cre] (<https://orcid.org/0000-0002-8685-9910>), Richard M. Heiberger [ctb] (formatHex(), *Bin, *Dec), John C. Nash [ctb] (hjkMpfr(), origin of unirootR()), Hans W. Borchers [ctb] (optimizeR(*, "GoldenRatio"); origin of hjkMpfr())
Initial release
2021-04-08

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