aga8 0.1.1

AGA8 and GERG2008 equations of state
Documentation 
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# Info
The Rust implementation of AGA8 is based on the C++ implementation.
The main difference from the other implementations is that it puts
the data into a struct `AGA8Detail`, and puts the functions as
methods under that struct.

[![Rust](https://github.com/royvegard/aga8/actions/workflows/rust.yml/badge.svg)](https://github.com/royvegard/aga8/actions/workflows/rust.yml)

## Building
Use cargo:

```shell
# Build for debugging
$ cargo build
# Buld for release
$ cargo build --release
```
This will build a number of different types of library files.

To build and run the demo example:
```shell
$ cargo run --example demo
```
This will run an example that uses the `AGA8Detail` struct
and prints the results to the terminal.

## Using
The library files can be used to call the `aga8_2017` function
from other languages. For example from C#:

```c#
[StructLayout(LayoutKind.Sequential)]
struct Aga8_Result {
    public double d; // Molar concentration [mol/l]
    public double mm;
    public double z;
    public double dp_dd;
    public double d2p_dd2;
    public double dp_dt;
    public double u;
    public double h;
    public double s;
    public double cv;
    public double cp;
    public double w;
    public double g;
    public double jt;
    public double kappa;
}

...
[DllImport("aga8_2017")]
private static extern Aga8_Result aga8_2017(double[] composition, double pressure,
    double temperature);
...

Console.WriteLine(aga8_2017(comp, 50000.0, 400.0).mm);
```

## Contact
For questions on the Rust impementation, please contact roy.vegard.ovesen@gmail.com