torch.isneginf# torch.isneginf(input, *, out=None) → Tensor# Tests if each element of input is negative infinity or not. Parameters input (Tensor) – the input tensor. Keyword Arguments out (Tensor, optional) – the output tensor. Example: >>> a = torch.tensor([-float('inf'), float('inf'), 1.2]) >>> torch.isneginf(a) tensor([ True, False, False])