---
license: mit
tags:
- pytorch
- safetensors
- threshold-logic
- neuromorphic
---

# threshold-xnor4

4-input XNOR gate. Outputs 1 when an even number of inputs are 1 (0, 2, or 4).

## Architecture

Tree structure: XNOR4(a,b,c,d) = XNOR(XNOR(a,b), XNOR(c,d))

```
a,b ──► XNOR ──┐
               ├──► XNOR ──► output
c,d ──► XNOR ──┘
```

## Parameters

| | |
|---|---|
| Neurons | 9 |
| Layers | 4 |
| Parameters | 27 |
| Magnitude | 27 |

## Usage

```python
from safetensors.torch import load_file

w = load_file('model.safetensors')
# See model.py for forward pass
```

## License

MIT