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Rounding Mode: Round

Round rounds to the closest representable number. In the case of a tie, it rounds:

  • Positive numbers to the closest representable number in the direction of positive infinity.

  • Negative numbers to the closest representable number in the direction of negative infinity.

As a result:

  • A small negative bias is introduced for negative samples.

  • No bias is introduced for samples with evenly distributed positive and negative values.

  • A small positive bias is introduced for positive samples.

In the MATLAB® software, you can perform this type of rounding using the round function. The rounding mode Round is shown in the following figure.