FTB-C000408 / Implementation concept

RSI Flat State

RSI Flat State is the explicitly governed RSI output used when both average gain and average loss are zero.

Also known asneutral RSI state

Intermediate 1 linked topicPublished

Definitions

In plain terms

This package returns 50 for the fully flat state, 100 for gain-only state, and zero for loss-only state.

Technical

The branch order, numeric tolerances, exact-zero definition, readiness, and output scale must be versioned.

Scope

A neutral flat-state value is a convention and must not be inferred from an undefined division.

Examples

  • A governed lesson calculates or identifies RSI Flat State only after its inputs, window, state, scale, and edge cases are declared.

Common misconceptions

  • A neutral flat-state value is a convention and must not be inferred from an undefined division.

Concept relationships

Prerequisites

Related

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D07-F03-A01 Important

Evidence and governance

  1. Relative Strength Index TA-Lib · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: Seed, flat-series behavior, unstable periods, and platform compatibility must be frozen before claiming parity.

Reviewed by
fintech-builder-batch-008
Last reviewed
2026-07-29
Next review
2027-07-29
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.