manual:chapter3:reals

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A number in newRPL is represented as exact or approximate. To enter a number as approximate use a trailing dot. To enter a number as exact omit any trailing dot. For routine arithmetic this distinction doesn't matter much, but it does come into play when evaluating symbolic expressions.

Here are some examples:

 Approximate Numbers Exact Numbers 1. 1 1.007. 1.007 1.007.e-10 1.007e-10

Arithmetic performed on numbers takes into account the operands (exact or approximate) and results are displayed accordingly.

For example, 1 3 / results in 0.333. (approximate), whereas 1 2 / results in 0.5 (exact).

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