3 # Any copyright is dedicated to the Public Domain.
4 # https://creativecommons.org/publicdomain/zero/1.0/
6 # Written by Francois Fleuret <francois@fleuret.org>
11 m = a[:, None] * b[None, :]
13 mm.set_(m.storage(), 0, (m.size(0), m.size(0) + m.size(1) - 1), (m.size(1) - 1, 1))
14 k = torch.arange(a.size(0))[:, None] + torch.arange(b.size(0))[None, :]
16 kk.set_(k.storage(), 0, (k.size(0), k.size(0) + k.size(1) - 1), (k.size(1) - 1, 1))
17 q = (kk == torch.arange(a.size(0) + b.size(0) - 1)[None, :])
18 return (mm * q).sum(0)
21 n = torch.arange(a.size(0) + 1).float()
25 a = torch.tensor([1., 2., 3.])
26 b = torch.tensor([2., 5.])