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[torch_tpu][cleanup] Updatetorch.sign op implementation with correct semantics.#101843
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…ct semantics.The integral dtype was disabled because `stablehlo.sign` op does not support booleans and unsigned integers, so there is no direct 1:1 mapping. However, the semantics are equivalent to comparing NE against 0, so I added that.PiperOrigin-RevId: 815976908
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[torch_tpu][cleanup] Update
torch.signop implementation with correct semantics.The integral dtype was disabled because
stablehlo.signop does not support booleans and unsigned integers, so there is no direct 1:1 mapping. However, the semantics are equivalent to comparing NE against 0, so I added that.