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Advanced Trigonometry Calculator (ATC) is an open-source mathematical computing engine written mainly in C/C++. Created in 2011 and maintained by Renato Alexandre dos Santos Freitas, ATC is designed as a practical Windows desktop application for advanced calculations, automation, and technical problem solving.
ATC supports equation solving, polynomial tools, complex numbers, matrix calculations, statistics, physics, geometry, unit conversions, DSP/FFT operations, and scripting. It can also process batch TXT files, making it useful for repeatable calculations and automated workflows.
The project also includes ATC Online Alpha, a WebAssembly-based version that brings parts of the ATC engine to the web.
ATC is released under the GPLv3 license and is made in Portugal.
Features
- Advanced equation solving and expression evaluation
- Polynomial tools with real and complex number support
- Matrix calculations, statistics, physics, and geometry tools
- Unit conversions and multi-base numerical system support
- DSP and FFT functions for signal-processing workflows
- Scripting support and batch processing of .txt files
- Windows desktop application with ATC Online via WebAssembly
- Open-source GPLv3 C/C++ mathematical computing engine
Project Samples
License
GNU General Public License version 3.0 (GPLv3)User Reviews
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5 out of 5 starsVery useful project!
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5 out of 5 starsUse it and you will get a great calculator in your hands, no doubt!
