why set uv = f0 = 0 in norm_interp_f0?

[Cescfangs]

DiffSinger/utils/pitch_utils.py

Lines 45 to 51 in 3d050f7

	def norm_interp_f0(f0, hparams):
	is_torch = isinstance(f0, torch.Tensor)
	if is_torch:
	device = f0.device
	f0 = f0.data.cpu().numpy()
	uv = f0 == 0
	f0 = norm_f0(f0, uv, hparams)

Hey guys I found you set uv = f0 = 0 at line 50, what's the intension behind this? Is that a typo or I miss something really important?

[Cescfangs]

sorry I've missed another "="