add¶

paddle. add ( x, y, name=None ) [source]

Elementwise Add Operator. Add two tensors element-wise The equation is:

\[Out=X+Y\]

$X$ the tensor of any dimension. $Y$ the tensor whose dimensions must be less than or equal to the dimensions of $X$.

There are two cases for this operator:

1. The shape of $Y$ is the same with $X$.

2. The shape of $Y$ is a continuous subsequence of $X$.

For case 2:

1. Broadcast $Y$ to match the shape of $X$, where axis is the start dimension index for broadcasting $Y$ onto $X$.

2. If $axis$ is -1 (default), $axis$=rank($X$)−rank($Y$).

3. The trailing dimensions of size 1 for $Y$ will be ignored for the consideration of subsequence, such as shape($Y$) = (2, 1) => (2).

   For example:

   shape(X) = (2, 3, 4, 5), shape(Y) = (,)
   shape(X) = (2, 3, 4, 5), shape(Y) = (5,)
   shape(X) = (2, 3, 4, 5), shape(Y) = (4, 5), with axis=-1(default) or axis=2
   shape(X) = (2, 3, 4, 5), shape(Y) = (3, 4), with axis=1
   shape(X) = (2, 3, 4, 5), shape(Y) = (2), with axis=0
   shape(X) = (2, 3, 4, 5), shape(Y) = (2, 1), with axis=0
   

Parameters

• x (Tensor) – Tensor or LoDTensor of any dimensions. Its dtype should be int32, int64, float32, float64.

• y (Tensor) – Tensor or LoDTensor of any dimensions. Its dtype should be int32, int64, float32, float64.

• name (string, optional) – For details, please refer to Name. Generally, no setting is required. Default: None.

Returns

N-D Tensor. A location into which the result is stored. It’s dimension equals with x.

Examples

import paddle

x = paddle.to_tensor([2, 3, 4], 'float64')
y = paddle.to_tensor([1, 5, 2], 'float64')
z = paddle.add(x, y)
print(z)  # [3., 8., 6. ]