multiversx-defi-math

What problem does it solve?

This Skill addresses the critical need for precise and safe financial calculations in DeFi smart contracts on MultiversX, preventing value leakage and exploitation due to rounding errors.

Core Features & Use Cases

• Precision Management: Provides constants and guidance for choosing appropriate decimal precision (BPS, PPM, WAD, RAY).
• Safe Rounding: Implements half-up rounding for unsigned and signed numbers to avoid systematic value loss.
• Percentage Calculations: Offers utilities for fee calculations using framework's proportion() and manual BPS/PPM methods.
• Use Case: When developing a lending protocol, use this Skill's RAY_PRECISION and half-up rounding for interest calculations to ensure accurate compounding and prevent protocol insolvency.

Quick Start

Use the multiversx-defi-math skill to calculate a 2.5% fee on a 1000 token amount.