U
    *-e                     @   s   d dl Z d dlZd dlZzd dlZdZW n ek
r@   dZY nX d dlmZ dddgZ	G dd dej
jjZdd	 Zddd
ddZdd ZdS )    NT)Anyautocast
custom_fwd
custom_bwdc                       sd   e Zd ZdZdejdfeejed fddZ fddZ	e
e
e
d fd	d
Z fddZ  ZS )r   z
    See :class:`torch.autocast`.
    ``torch.cuda.amp.autocast(args...)`` is equivalent to ``torch.autocast("cuda", args...)``
    Tenableddtypecache_enabledc                    s8   t j r || _d| _|| _d S t jd|||d d S )Ncudar   )torch_jit_internalis_scriptingZ_enabledZdeviceZ
fast_dtypesuper__init__)selfr   r   r	   	__class__ ]/var/www/html/Darija-Ai-Train/env/lib/python3.8/site-packages/torch/cuda/amp/autocast_mode.pyr      s    
   zautocast.__init__c                    s   t j r| S t  S N)r   r   r   r   	__enter__)r   r   r   r   r   &   s    
zautocast.__enter__)exc_typeexc_valexc_tbc                    s   t j rd S t |||S r   )r   r   r   r   __exit__)r   r   r   r   r   r   r   r   ,   s    
zautocast.__exit__c                    s   t j r|S t |S r   )r   r   r   r   __call__)r   funcr   r   r   r   1   s    
zautocast.__call__)__name__
__module____qualname____doc__r   Zfloat16boolr   r   r   r   r   r   __classcell__r   r   r   r   r      s   c                    s   t | tjr8|  o$| jo$| jtjk	}|r4|  S | S t | tt	frJ| S t
r^t | tjr^| S t | tjjr fdd|  D S t | tjjr fdd| D }t | ttfrt| |S |S n| S d S )Nc                    s"   i | ]\}}t | t | qS r   _cast).0kvr   r   r   
<dictcomp>F   s      z_cast.<locals>.<dictcomp>c                 3   s   | ]}t | V  qd S r   r#   )r%   r'   r(   r   r   	<genexpr>H   s     z_cast.<locals>.<genexpr>)
isinstancer   ZTensorZis_floating_pointZis_cudar   Zfloat64tostrbytes	HAS_NUMPYnpZndarraycollectionsabcMappingitemsIterablelisttupletype)valuer   Zis_eligibleiterabler   r(   r   r$   9   s&    
r$   cast_inputsc                   s2   dkrt jt dS t  fdd}|S )a>  
    Helper decorator for ``forward`` methods of custom autograd functions (subclasses of
    :class:`torch.autograd.Function`).  See the :ref:`example page<amp-custom-examples>` for more detail.

    Args:
        cast_inputs (:class:`torch.dtype` or None, optional, default=None):  If not ``None``,
            when ``forward`` runs in an autocast-enabled region, casts incoming
            floating-point CUDA Tensors to the target dtype (non-floating-point Tensors are not affected),
            then executes ``forward`` with autocast disabled.
            If ``None``, ``forward``'s internal ops execute with the current autocast state.

    .. note::
        If the decorated ``forward`` is called outside an autocast-enabled region,
        :func:`custom_fwd<custom_fwd>` is a no-op and ``cast_inputs`` has no effect.
    Nr;   c               
      s   t  | d _ d kr.t  | d _| |S t  }d| d _|rztdd$ t|  t| W  5 Q R  S Q R X n
| |S d S )Nr   F)r   )r   Zget_autocast_gpu_dtype_dtypeZis_autocast_enabled_fwd_used_autocastr   r$   )argskwargsZautocast_contextr<   fwdr   r   decorate_fwdl   s    

*z custom_fwd.<locals>.decorate_fwd)	functoolspartialr   wraps)rB   r<   rC   r   rA   r   r   Y   s
    c                    s   t   fdd}|S )a  
    Helper decorator for backward methods of custom autograd functions (subclasses of
    :class:`torch.autograd.Function`).
    Ensures that ``backward`` executes with the same autocast state as ``forward``.
    See the :ref:`example page<amp-custom-examples>` for more detail.
    c               
      s:   t | d j| d jd  | |W  5 Q R  S Q R X d S )Nr   )r   r   )r   r>   r=   )r?   r@   bwdr   r   decorate_bwd   s    z custom_bwd.<locals>.decorate_bwd)rD   rF   )rH   rI   r   rG   r   r      s    )N)r1   rD   r   numpyr0   r/   ModuleNotFoundErrortypingr   __all__ampZautocast_moder   r$   r   r   r   r   r   r   <module>   s   

( (