Nothing
#' Compare x to its round value
#' @param x a double
#' @noRd
.as_int<-function(x)
{if(!is.integer(x)) {
xo = round(x)
if(any(x > .Machine$integer.max))
stop("the input has entries too large to be integer")
if(!identical(TRUE, (ax <- all.equal(xo, x))))
warning("the argument is not integer")
else x=xo
}
x
}
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