round2: Round a given number, with 5 always rounded up
Description
Given a number and a digit to round to, returns the rounded number,
with 5 always rounded upwards.
Usage
round2(x, n)
Arguments
x
the data to be rounded
n
the number of digits to round to
Details
This function differs from round, which rounds 5 "towards the
even number". Rounding 5s up leads to bias when positive and negative numbers
are expected, but can be desired in some cases.