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Fix PaddleDocs function pad #7300

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Fix PaddleDocs function pad #7300

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7a1ba50
fix the pad , issue 7299: https://github.com/PaddlePaddle/docs/issues…
Echo-Nie May 6, 2025
b51f182
Merge branch 'PaddlePaddle:develop' into fix7299
Echo-Nie May 16, 2025
6ad57d2
fix according review. Supplemented the explanation of odd and even nu…
Echo-Nie May 16, 2025
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3 changes: 2 additions & 1 deletion docs/api/paddle/nn/functional/pad_cn.rst
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Expand Up @@ -10,7 +10,8 @@ pad
.. note::
1. 记 ``x`` 的维数为 N (以下延用)。 ``pad`` 的长度：

1.1. 当 ``mode`` 为 ``'constant'`` 时， ``pad`` 的长度可以是任意小于等于 2*N 的偶数。
1.1. 当 ``mode`` 为 ``'constant'`` 时， ``pad`` 的长度可以是任意小于等于 2*N 的偶数。若输入奇数长度的 ``pad`` ，会自动在末尾补零至偶数长度。例如：``pad=[0, 0, 0, 0, 2]`` 会被扩展为 ``[0, 0, 0, 0, 2, 0]`` ，表示最后一个维度前填充 2 个值，后填充 0 个值。此行为可能导致预期外的填充结果，因此 **不建议使用奇数长度的 pad** 。

1.2. 当 ``mode`` 为 ``'reflect'``、 ``'replicate'`` 或 ``'circular'`` 时， ``pad`` 的长度必须为 2*(N-2)。

2. ``pad`` 的顺序：支持右对齐(从 ``x`` 的最后一维开始)。特别地，当 ``mode`` 为 ``'constant'`` ，且 ``pad`` 是长度为 2N 的列表时，pad 的顺序可以通过 ``pad_from_left_axis`` 参数来控制，如果 ``pad_from_left_axis`` 是 True，pad 的顺序则是左对齐；如果 ``pad_from_left_axis`` 是 False，pad 的顺序则是右对齐。
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