code: def rotate_every_two(x):
      x = rearrange(x, "... (d j) -> ... d j", j=2)
      x1, x2 = x.unbind(dim=-1)
      x = torch.stack((-x2, x1), dim=-1)
      return rearrange(x, "... d j -> ... (d j)")
  
imports: from math import sqrt, pi, log
  import torch
  from torch import nn, einsum
  import torch.nn.functional
  from einops import rearrange, repeat
  from einops.layers.torch import Rearrange
label_desc: Use image node_id 1 for calling a global function with example usage: rotate_every_two(x) and returns: rearrange