Directed rounding
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Directed rounding refers to rounding a number in a certain direction - toward a certain number or limit. For example, the IEEE 754 floating point standard has 4 rounding modes, 3 of which are directed rounding:
- Round inward (toward 0)
- Round upward (toward +infinity)
- Round downward (toward -infinity)
The IEEE floating point standard must round because the result of operations on floating point numbers are not always representable because of limitations in precision.
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