# Is there a possibility of transcoding QNDF?
**URL:** https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757
**Category:** Numerics
**Tags:** package, ode
**Created:** [May 27, 2024, 1:38am UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757 "2024-05-27T01:38:36Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Pugolas](https://discourse.julialang.org/u/Pugolas)
#### Post date: [May 27, 2024, 1:38am UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757/1 "2024-05-27T01:38:36Z")
I am currently working on a \*\*C++\*\*project that requires solving **large rigid differential equations**. I have learned that **QNDF** in **OrdinariDiffEq.jl** is very good at it. Is it possible to complete code conversion based on open source code in a short period of time?
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### Author:  [@Oscar\_Smith](https://discourse.julialang.org/u/Oscar_Smith)
#### Post date: [May 27, 2024, 2:24am UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757/2 "2024-05-27T02:24:39Z")
TLDR no. If you’re stuck in C++, your best bet is probably Sundials.
QNDF by itself isn’t too much code, but the big problem is that writing a good stiff solver requires also writing a custom nonlinear solver with a lot of special bits to make it actually work for the ODE.
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### Author:  [@Pugolas](https://discourse.julialang.org/u/Pugolas)
#### Post date: [May 27, 2024, 5:45am UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757/5 "2024-05-27T05:45:39Z")
Thank you for your answer. I will consider it.
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### Author:  [@Pugolas](https://discourse.julialang.org/u/Pugolas)
#### Post date: [May 27, 2024, 5:49am UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757/6 "2024-05-27T05:49:09Z")
Thanks for your suggestions, but I understand that the function of CxxWrap.jl is to call C++ code in Julia.
Are you saying the opposite?
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### Author:  [@mbauman](https://discourse.julialang.org/u/mbauman)
#### Post date: [June 7, 2024, 6:42pm UTC](https://discourse.julialang.org/t/is-there-a-possibility-of-transcoding-qndf/114757/7 "2024-06-07T18:42:15Z")
No, you are correct — that was an AI spam chatbot spreading bad information along with a spam link. I’ve deleted the post and banned the user.
This is why we can’t have nice things…