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cummax:
description: |
Returns a tuple (values,indices) where 'values' is the cumulative maximum value of input Tensor `input`
along the dimension `axis`, and `indices` is the index location of each maximum value.
.. math::
\begin{array}{ll} \\
y_{i} = \max(x_{1}, x_{2}, ... , x_{i})
\end{array}
Args:
input (Tensor): The input Tensor, rank of `input` > 0.
axis (int): The dimension to do the operation over. The value of `axis` must be in the range
`[-input.ndim, input.ndim - 1]`.
Returns:
tuple [Tensor], tuple of 2 Tensors, containing the cumulative maximum of elements and the index.
The shape of each output tensor is the same as input `input`.
Raises:
TypeError: If `input` is not a Tensor.
TypeError: If `axis` is not an int.
ValueError: If `axis` is out the range of `[-input.ndim, input.ndim - 1]`.
Supported Platforms:
``GPU`` ``CPU``
Examples:
>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor
>>> import mindspore.ops as ops
>>> x = Tensor(np.array([[3, 4, 6, 10], [1, 6, 7, 9], [4, 3, 8, 7], [1, 3, 7, 9]]).astype(np.float32))
>>> output = ops.cummax(x, axis=0)
>>> print(output[0])
[[ 3. 4. 6. 10.]
[ 3. 6. 7. 10.]
[ 4. 6. 8. 10.]
[ 4. 6. 8. 10.]]
>>> print(output[1])
[[0 0 0 0]
[0 1 1 0]
[2 1 2 0]
[2 1 2 0]]
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