Preface

Welcome to the SYX Standard Library Guide. For language syntax, see the Language Guide; for the formal rules, see the Language Reference. This book covers only the embeddable packages you can import: their paths, their honest boundaries, and the runnable examples in this repository that you can check them against.

This edition covers: SYX 117.0 / Phase 139 · HostFn ≈ 630 · embedded manifest packages/internal/manifest.json · package overview packages/README.md

How This Book Divides the Work with the Language Guide

If you want…	Go to
func / class / import syntax	Language Guide
Host plugins / dlopen	Language Guide · Runtime Extensions
import Numerics / System / Logging / Networking	This book
CLI, syx.toml	docs/9_UsageGuide.md

Honesty Conventions

• Implemented: surfaces exercised by smoke tests or runnable through Host.
• Partially implemented: compiles, but the semantics are incomplete (several process paths remain partial).
• Not claimed: product Mat GA, E-00, A[i,j], faer product GA, P-SURF product ranking.

The embedded package sources live in packages/. Do not merge Mat into packages/core/math.sy.