Exercise 3: R numeric calculations
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Find a function FUN that leads to the following output:
FUN(pi) - FUN(exp(1)) ## [1] 1
Hint: aim to keep the answer simple. The main logic of the function can often be summarized in a single line of R code.
Answer: click to reveal
We can write the function as follows:
FUN <- function(x) {
return(floor(x))
}
The R function floor returns the largest integer not greater than the input argument:
pi ## [1] 3.141593 FUN(pi) ## [1] 3 exp(1) ## [1] 2.718282 FUN(exp(1)) ## [1] 2
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