Add mexce to Math section (#1712)

mexce is a single-header, dependency-free JIT compiler for scalar
mathematical expressions that generates optimized x87 FPU machine code.

Author: imakris

README.md

@@ -849,6 +849,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [linalg.h](https://github.com/sgorsten/linalg) - Single header, public domain, short vector math library for C++. [Unlicense]
 * [MATIO](https://github.com/tbeu/matio) -  MATLAB MAT File I/O Library. [BSD-2-Clause] [website](https://sourceforge.net/projects/matio/)
 * [MatX](https://github.com/NVIDIA/MatX) - A GPU-accelerated C++17 numerical computing library with a MATLAB/Python-like syntax. [BSD 3-clause]
+* [mexce](https://github.com/imakris/mexce) - A single-header, dependency-free JIT compiler for scalar mathematical expressions that generates optimized x87 FPU machine code. [BSD]
 * [MIRACL](https://github.com/CertiVox/MIRACL) - A Multiprecision Integer and Rational Arithmetic Cryptographic Library. [AGPL]
 * [NumCpp](https://github.com/dpilger26/NumCpp) - A templatized header only C++ implementation of the Python Numpy library. [MIT]
 * [OMath](https://github.com/orange-cpp/omath) - Cross-platform modern general purpose math library written in C++23 that suitable for cheat/game development. [ZLIB]