torch.linalg.cross¶
- torch.linalg.cross(input, other, *, dim=-1, out=None) Tensor ¶
计算两个 3 维向量的叉积。
支持 float、double、cfloat 和 cdouble 数据类型。还支持向量批处理,为此它沿维度
dim
计算乘积。它在批处理维度上进行广播。- 参数
- 关键字参数
out (Tensor, 可选) – 输出张量。如果为 None 则忽略。默认值:None。
示例
>>> a = torch.randn(4, 3) >>> a tensor([[-0.3956, 1.1455, 1.6895], [-0.5849, 1.3672, 0.3599], [-1.1626, 0.7180, -0.0521], [-0.1339, 0.9902, -2.0225]]) >>> b = torch.randn(4, 3) >>> b tensor([[-0.0257, -1.4725, -1.2251], [-1.1479, -0.7005, -1.9757], [-1.3904, 0.3726, -1.1836], [-0.9688, -0.7153, 0.2159]]) >>> torch.linalg.cross(a, b) tensor([[ 1.0844, -0.5281, 0.6120], [-2.4490, -1.5687, 1.9792], [-0.8304, -1.3037, 0.5650], [-1.2329, 1.9883, 1.0551]]) >>> a = torch.randn(1, 3) # a is broadcast to match shape of b >>> a tensor([[-0.9941, -0.5132, 0.5681]]) >>> torch.linalg.cross(a, b) tensor([[ 1.4653, -1.2325, 1.4507], [ 1.4119, -2.6163, 0.1073], [ 0.3957, -1.9666, -1.0840], [ 0.2956, -0.3357, 0.2139]])