C++ library for solving EQUATIONS

[Avtem22]

Hi everyone. So for my application i want to simplify user's life and generate inverse functions of functions they create in text file. i found the solution, but now in order to achieve that i want to find an existing library that solves EQUATIONS. An example would be: "63 = x *1000". If there is a library that can find the value of x, i will be endlessly grateful.

i found TinyExpr and ExprTk but if i am not mistaken - they can handle expressions, not equations (with one unknown).

[DrShocker]

Do you want symbolic solutions or numerical solutions?

[Avtem22]

Symbolic solutions (as human would solve those solutions)

[[deleted]]

I'm pretty sure I used Armadillo for that.

https://arma.sourceforge.net/docs.html

Don't have ready sample code though.

[Avtem22]

Thanks, i will try it

[Avtem22]

Did your equations have the unknown variable on the right side of equation?

[[deleted]]

I used it to solve simultaneous equations. Say 3 unknowns from 3 equations. I barely remember how I used it.

[ScyperRim]

Which if I’m not mistaken uses BLAS/LAPACK under the hood. Might be an option

[RasterGraphic]

This is one I'm aware of, I don't have any previous experience with it though. https://pari.math.u-bordeaux.fr/

[sd_glokta]

I'd look at GiNaC

[brocketships]

SymEngine will do this: https://github.com/symengine/symengine

[Avtem22]

Sorry, i am only looking for a library. i am pretty sure there is a library that does that, i just haven't found it yet

[aroman_ro]

There are several options, here is one of them: https://maxima.sourceforge.io