Math Utils
Info
The Math Utils is a Library for MetaTrader 5 that handy functions for comparison of doubles handy functions for rounding of doubles miscellaneous handy functions for doubles handy functions for low-level binary operations on doubles handy functions for formatting of doubles to string exact comparison of doubles sometimes, when comparing two double numbers that assumed to be equal, but reached to via different calculations, the comparison goes wrong. Actually A can differ from B by in very little amount (at the 16th decimal place) due to binary rounding errors, so exact comparisons (==,.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Math Utils
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
Handy functions for comparison of doubles Handy functions for rounding of doubles Miscellaneous handy functions for doubles Handy functions for low-level binary operations on doubles Handy functions for formatting of doubles to string Exact comparison of doubles Sometimes, when comparing two double numbers that assumed to be equal, but reached to via different calculations, the comparison goes wrong.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: A cross-platform library of original mathematical functions - another powerful library for MetaTrader 5 traders.
Handy functions for comparison of doubles Handy functions for rounding of doubles Miscellaneous handy functions for doubles Handy functions for low-level binary operations on doubles Handy functions for formatting of doubles to string Exact comparison of doublesAlso recommended: High-Performance Time Functions (Time Utils) - similar library with strong performance on MetaTrader 5.
Sometimes, when comparing two double numbers that assumed to be equal, but reached to via different calculations, the comparison goes wrong. Actually A can differ from B by in very little amount (at the 16th decimal place) due to binary rounding errors, so exact comparisons (==
,
!=
,
>
,
>=
,
<
,
<=
operators) fail.
Real situations of where exact comparison of doubles can fail
Comparing doubles reached via different calculations:
Experts with trailing stop function:
Experts with hidden take profit function:
Comparing price levels in a grid strategy:
Loose Comparison
To avoid unexpected results, it is better to replace exact comparisons (
==
,
!=
,
>
,
>=
,
<
,
<=
), with loose comparisons to overcome the floating-point imprecision. This small library provides the required functions.
You may also like: EA To Math - excellent alternative for library users on MetaTrader 5.
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.