FA-17137 / Floating-point arithmetic / Member archive
Engineering notation fails to pad an integer mantissa · case 02
Engineering notation fails to pad an integer mantissa.
Case contract
Render a finite decimal text after half-even rounding to precision, in scientific or engineering notation. Preserve coefficient trailing zeros; engineering exponent is a multiple of three with one to three integer digits. Zero is canonical coefficient zero with original sign and exponent zero.
Why this case matters
An offline floating representation model isolates a reproducible arithmetic fault.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| padding | "2e0" | "200e0" | Failed |
MEMBER ARCHIVE
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