Can anyone translate this C++ code

Question

I got it from other website. It is used for calculate geoid height. It is in c++ language. I need to convert it to kotlin.
I need to know what is unsigned int, inline int, const float *data, const float *floatptr.
Could you please also tell what is the function of it in this code.
If you don't mind, you could help me by convert this into kotlin language.
Here the code

https://code.sololearn.com/c9fekOQkuG1B/?ref=app

Answer 1

Why do you want it in Kotlin?

Answer 2

I want to create android application with it. Just forget about my question, I already found the answer.