Are Elements Of x Even Numbers?

Return TRUE if n is an integer evenly divisibly by 2.

isEven(n)

Arguments

n	A numeric vector.

Value

A logical vector the same length as n. TRUE if n is an integer and is even, FALSE if n is an integer and not even, NA otherwise.

Details

Test whether elements of a numeric vector are even. For whole numbers return TRUE or FALSE. For decimals return NA.

Author

David Braze davebraze@gmail.com

Examples

n <- 1:10
isEven(n)
#>  [1] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE

m <- seq(1, 10, .5)
isEven(m)
#>  [1] FALSE    NA  TRUE    NA FALSE    NA  TRUE    NA FALSE    NA  TRUE    NA
#> [13] FALSE    NA  TRUE    NA FALSE    NA  TRUE