FA-16117 / Floating-point arithmetic / Member archive

Square-root endpoint is assigned positive one · case 02

Square-root endpoint is assigned positive one.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Evaluate sqrt(1+x)-1 stably for finite x >= -1. Finite results are rendered to eleven significant decimal digits; modeled domain violations and arithmetic errors are explicit strings.

Why this case matters

An offline floating representation model isolates a reproducible arithmetic fault.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
endpoint	`"1"`	`"-1"`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.