Round function

[Rory Conolly]

The round function in Octave rounds to the nearest integer while round in 
MATLAB supports rounding to arbitrary precision:

round(x,n) rounds x to n decimal places.

This is just a suggestion/request that it would be handy for the Octave 
function to work like the equivalent MATLAB function. This capability can be 
important when needing to compare numbers using == when  numerical noise can 
cause problems.

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