# Fortran API

*Auto-generated from compiled uclchemwrap modules*

This section documents all Fortran modules and their parameters as they exist in the compiled code.

## Accessing Fortran Parameters at Runtime

The Fortran parameters and functions are accessed through the `uclchem.advanced.GeneralSettings()` interface:

```python
import uclchem

settings = uclchem.advanced.GeneralSettings()

# Read parameter value
value = settings.defaultparameters.abstol_factor.get()

# Modify parameter (non-PARAMETER only)
settings.defaultparameters.abstol_factor.set(new_value)
```

For more detailed examples of interacting with Fortran parameters, see:
- [Advanced Settings](../../tutorials/6_advanced_settings.html): Parameter modification examples
- [Heating & Cooling Settings](../../tutorials/7_heating_cooling_settings.html): Physical parameter tuning

## Available Modules

- **[chemistry](chemistry.md)**: 39 parameters/variables
- **[cloud_mod](cloud_mod.md)**: 5 parameters/variables
- **[collapse_mod](collapse_mod.md)**: 6 parameters/variables
- **[constants](constants.md)**: 43 parameters/variables
- **[cshock_mod](cshock_mod.md)**: 44 parameters/variables
- **[defaultparameters](defaultparameters.md)**: 112 parameters/variables
- **[f2py_constants](f2py_constants.md)**: 19 parameters/variables
- **[heating](heating.md)**: 22 parameters/variables
- **[hotcore](hotcore.md)**: 18 parameters/variables
- **[io](io.md)**: 18 parameters/variables
- **[jshock_mod](jshock_mod.md)**: 16 parameters/variables
- **[network](network.md)**: 123 parameters/variables
- **[photoreactions](photoreactions.md)**: 15 parameters/variables
- **[physicscore](physicscore.md)**: 16 parameters/variables
- **[postprocess_mod](postprocess_mod.md)**: 7 parameters/variables
- **[rates](rates.md)**: 12 parameters/variables
- **[sputtering](sputtering.md)**: 6 parameters/variables
- **[surfacereactions](surfacereactions.md)**: 45 parameters/variables

## Fortran Functions

Key Fortran functions available through the wrapper:

| Function | Signature |
|----------|----------|
| `auto_initialize_coolant_directory` | `() -> bool` |

```{toctree}
:maxdepth: 2
:hidden:

chemistry
cloud_mod
collapse_mod
constants
cshock_mod
defaultparameters
f2py_constants
heating
hotcore
io
jshock_mod
network
photoreactions
physicscore
postprocess_mod
rates
sputtering
surfacereactions
```