onnxruntime/js/web/test/data/ops/tanh.jsonc

[
  {
    "name": "tanh with no attributes",
    "operator": "Tanh",
    "attributes": [],
    "cases": [
      {
        "name": "T[2,4]",
        "inputs": [
          {
            "data": [-1000, -1, 0, 0.1, 0.2, 0.3, 0.4, 1000],
            "dims": [2, 4],
            "type": "float32"
          }
        ],
        "outputs": [
          {
            "data": [-1, -0.761594, 0, 0.099668, 0.197375, 0.291313, 0.379949, 1],
            "dims": [2, 4],
            "type": "float32"
          }
        ]
      }
    ]
  }
]
[js/webgpu] Fix Tanh explosion (#19201) ### Description ```math \tanh(x)=\frac{e^x-e^{-x}}{e^x+e^{-x}}= \left\{ \begin{array}{cc} -\frac{1-e^{-2\cdot(-x)}}{1+e^{-2\cdot(-x)}}, & x<0 \\ 0, & x=0 \\ \frac{1-e^{-2x}}{1+e^{-2x}}, & x>0 \end{array} \right. ``` ### Motivation and Context On some platforms, $$\tanh(1000)=\frac{e^{1000}-e^{-1000}}{e^{1000}+e^{-1000}}$$ would produce NaN instead of 0.999... or 1 (imagine $e^{1000}=\infty$ and $\frac{\infty}{\infty}$ explodes). 2024-01-25 16:25:35 +00:00			`[`
			`{`
			`"name": "tanh with no attributes",`
			`"operator": "Tanh",`
			`"attributes": [],`
			`"cases": [`
			`{`
			`"name": "T[2,4]",`
			`"inputs": [`
			`{`
			`"data": [-1000, -1, 0, 0.1, 0.2, 0.3, 0.4, 1000],`
			`"dims": [2, 4],`
			`"type": "float32"`
			`}`
			`],`
			`"outputs": [`
			`{`
			`"data": [-1, -0.761594, 0, 0.099668, 0.197375, 0.291313, 0.379949, 1],`
			`"dims": [2, 4],`
			`"type": "float32"`
			`}`
			`]`
			`}`
			`]`
			`}`
			`]`