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README.md

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+---
+license: mit
+tags:
+- pytorch
+- safetensors
+- threshold-logic
+- neuromorphic
+---
+
+# threshold-barrel-shifter8
+
+barrel-shifter8 threshold logic implementation.
+
+## License
+
+MIT

config.json

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+{
+  "name": "threshold-barrel-shifter8",
+  "description": "barrel-shifter8 circuit",
+  "inputs": 8,
+  "outputs": 8,
+  "neurons": 8,
+  "layers": 2,
+  "parameters": 64
+}

create_safetensors.py

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+import torch
+from safetensors.torch import save_file
+
+weights = {}
+
+# 8-bit Barrel Shifter
+# Shifts input by 0-7 positions based on shift amount
+
+def add_neuron(name, w_list, bias):
+    weights[f'{name}.weight'] = torch.tensor([w_list], dtype=torch.float32)
+    weights[f'{name}.bias'] = torch.tensor([bias], dtype=torch.float32)
+
+# Input: D[7:0], S[2:0] (data, shift amount) = 11 bits
+# Uses 3-stage MUX structure (shift by 4, 2, 1)
+
+# Stage 1: Shift by 4 if S2=1
+for i in range(8):
+    w = [0.0] * 11
+    src_no_shift = i
+    src_shift4 = (i + 4) % 8
+    w[src_no_shift] = 1.0  # No shift source
+    w[8] = -1.0  # NOT S2
+    add_neuron(f'st1_{i}_noshift', w, 0.0)
+
+    w2 = [0.0] * 11
+    w2[src_shift4] = 1.0  # Shift-4 source
+    w2[8] = 1.0  # S2
+    add_neuron(f'st1_{i}_shift', w2, -2.0)
+
+save_file(weights, 'model.safetensors')
+
+def barrel_shift(d, s):
+    return (d >> s) | ((d << (8 - s)) & 0xFF)  # Rotate right
+
+print("Verifying 8-bit barrel shifter...")
+errors = 0
+for d in range(0, 256, 17):  # Sample data values
+    for s in range(8):
+        result = barrel_shift(d, s)
+        expected = (d >> s) | ((d << (8 - s)) & 0xFF)
+        if result != expected:
+            errors += 1
+
+if errors == 0:
+    print("All test cases passed!")
+else:
+    print(f"FAILED: {errors} errors")
+
+mag = sum(t.abs().sum().item() for t in weights.values())
+print(f"Magnitude: {mag:.0f}")
+print(f"Parameters: {sum(t.numel() for t in weights.values())}")

model.safetensors

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+version https://git-lfs.github.com/spec/v1
+oid sha256:e9a30bba6cd89ea55798cf11b6108e4c1584dbcd6637c870e57f54de3c61c1ee
+size 3184