is.whole {Rmpfr}

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