U
    qhE
                     @  sN   d dl mZ d dlZd dlmZ ddddddd	d
ddZG dd deZdS )    )annotationsN)OpRunh㈵>z
np.ndarrayintfloatz)tuple[np.ndarray, np.ndarray, np.ndarray])XWBaxisepsilonreturnc                 C  s8  | j }t|}|dk r|| }|| }|d| d|  }d}	d}
t|D ]&}||k rd|	|| 9 }	qJ|
|| 9 }
qJt| |	|
f}tj|ddd|
 }|| }|| }tj|ddd|
 }|| }t|}t|}|| }t||| }|d k	r|| }t||}t||}|| j	|| j	|| j	fS )Nr   )   r   T)r   Zkeepdims)
shapelenrangenpZreshapesumsqrtZ
reciprocalZastypeZdtype)r   r	   r
   r   r   ZX_shapeZX_rankZunsqueezed_rankZreduction_shapeZ
row_numberZ
col_numberiZx_matZx_meanZx_diffZx_squared_diffZvarianceZvariance_epsZstd_devZinv_std_devZy_matYZX_meanZX_inv_std_dev r   M/tmp/pip-unpacked-wheel-xnis5xre/onnx/reference/ops/op_layer_normalization.py_layer_normalization   s6    

r   c                   @  s   e Zd ZdddZdS )LayerNormalizationNc                 C  s.   |dkrt d| dt|||||d}|S )Nr   z2LayerNormalization not implemented for stash_type=z != 1.)r   r   )NotImplementedErrorr   )selfr   ZScaler
   r   r   Z
stash_typeresr   r   r   _runD   s    
zLayerNormalization._run)NNNN)__name__
__module____qualname__r   r   r   r   r   r   C   s   r   )r   r   )
__future__r   Znumpyr   Zonnx.reference.op_runr   r   r   r   r   r   r   <module>   s     8