{
  "domain": "ai.onnx",
  "name": "Sign",
  "sinceVersion": 13,
  "inputs": { "input": { "dtype": "T" } },
  "outputs": { "output": { "dtype": "T", "rank": "ranks.input", "shape": "shapes.input" } },
  "typeConstraints": { "T": ["float32", "float16", "int32", "uint32", "int16", "int8", "uint8"] },
  "tunables": { "WORKGROUP_SIZE": { "default": 256 } },
  "derive": { "scalar": "dtypes.T" },
  "variants": [
    {
      "id": "same_layout_vec4",
      "priority": 20,
      "when": ["numel(shapes.input) > 0", "numel(shapes.input) % 4 == 0", "numel(shapes.input) == numel(shapes.output)", "f16Ok(dtypes.T)"],
      "passes": [
        {
          "id": "main",
          "name": "Sign.Vec4",
          "shader": "unary-vec4.wgsl.jinja",
          "derive": {
            "vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"",
            "vec4PerThread": "4 if numel(shapes.output) * dtypeBytes(tensorDtypes.output) <= 16777216 else 1"
          },
          "bindings": [
            { "arg": "input", "name": "x", "elementType": "$vectorScalar" },
            { "arg": "output", "name": "y", "elementType": "$vectorScalar" },
            { "name": "params", "struct": [{ "name": "count", "type": "u32", "value": "numel(shapes.output) / 4" }] }
          ],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.output) / 4, 4 if numel(shapes.output) * dtypeBytes(tensorDtypes.output) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.output) / 4, 4 if numel(shapes.output) * dtypeBytes(tensorDtypes.output) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    },
    {
      "id": "elementwise",
      "when": ["numel(shapes.input) == numel(shapes.output) and (f16Ok(dtypes.T))"],
      "passes": [
        {
          "id": "main",
          "name": "Sign",
          "shader": "unary-scalar.wgsl.jinja",
          "derive": { "itemsPerInvocation": 4 },
          "bindings": [
            "input",
            "output",
            { "name": "params", "struct": [{ "name": "count", "type": "u32", "value": "numel(shapes.output)" }] }
          ],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.output), 4)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.output), 4)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    }
  ],
  "bindings": {}
}