diff options
Diffstat (limited to 'numpy/array_api/linalg.py')
| -rw-r--r-- | numpy/array_api/linalg.py | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/numpy/array_api/linalg.py b/numpy/array_api/linalg.py index a4a2f23e4..d214046ef 100644 --- a/numpy/array_api/linalg.py +++ b/numpy/array_api/linalg.py @@ -379,7 +379,18 @@ def trace(x: Array, /, *, offset: int = 0) -> Array: def vecdot(x1: Array, x2: Array, /, *, axis: int = -1) -> Array: if x1.dtype not in _numeric_dtypes or x2.dtype not in _numeric_dtypes: raise TypeError('Only numeric dtypes are allowed in vecdot') - return tensordot(x1, x2, axes=((axis,), (axis,))) + ndim = max(x1.ndim, x2.ndim) + x1_shape = (1,)*(ndim - x1.ndim) + tuple(x1.shape) + x2_shape = (1,)*(ndim - x2.ndim) + tuple(x2.shape) + if x1_shape[axis] != x2_shape[axis]: + raise ValueError("x1 and x2 must have the same size along the given axis") + + x1_, x2_ = np.broadcast_arrays(x1._array, x2._array) + x1_ = np.moveaxis(x1_, axis, -1) + x2_ = np.moveaxis(x2_, axis, -1) + + res = x1_[..., None, :] @ x2_[..., None] + return Array._new(res[..., 0, 0]) # Note: the name here is different from norm(). The array API norm is split |