The plain-English version
A finite-precision representation and calculation system for approximating real-number values.
Why it matters
Rounding and representable range affect comparison and accumulated error.
Let’s make it click
A financial or scientific calculation uses an appropriate representation and an explicit comparison tolerance.
Vibe Bro’s heads-up
Many decimal fractions are not represented exactly in binary floating point; exact equality may be the wrong test for computed results.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Finite precision/range and non-exact binary representations of many decimal fractions are correctly stated; comparison tolerance must fit the calculation.