
'''simple docstring'''


import math

import tensorflow as tf
from packaging import version



def  __snake_case     (    _UpperCAmelCase					:       Optional[int]):
   UpperCamelCase       =  tf.convert_to_tensor(_UpperCAmelCase)
   UpperCamelCase       =  0.5 * (1.0 + tf.math.erf(x / tf.cast(tf.sqrt(2.0),      x.dtype)))

   return x * cdf



def  __snake_case     (    _UpperCAmelCase					:       int):
   UpperCamelCase       =  tf.convert_to_tensor(_UpperCAmelCase)
   UpperCamelCase       =  tf.cast(math.pi,      x.dtype)
   UpperCamelCase       =  tf.cast(0.0_4_4_7_1_5,      x.dtype)
   UpperCamelCase       =  0.5 * (1.0 + tf.tanh(tf.sqrt(2.0 / pi) * (x + coeff * tf.pow(_UpperCAmelCase,      3))))

   return x * cdf



def  __snake_case     (    _UpperCAmelCase					:       Union[str, Any]):
   UpperCamelCase       =  tf.convert_to_tensor(_UpperCAmelCase)

   return x * tf.tanh(tf.math.softplus(_UpperCAmelCase))



def  __snake_case     (    _UpperCAmelCase					:       Any):
   UpperCamelCase       =  tf.convert_to_tensor(_UpperCAmelCase)
   UpperCamelCase       =  tf.cast(0.0_4_4_7_1_5,      x.dtype)
   UpperCamelCase       =  tf.cast(0.7_9_7_8_8_4_5_6_0_8,      x.dtype)

   return 0.5 * x * (1.0 + tf.tanh(x * coeffa * (1.0 + coeffa * x * x)))



def  __snake_case     (    _UpperCAmelCase					:       Any):
   UpperCamelCase       =  tf.convert_to_tensor(_UpperCAmelCase)
   UpperCamelCase       =  tf.cast(1.7_0_2,      x.dtype)
   return x * tf.math.sigmoid(coeff * x)



def  __snake_case     (    _UpperCAmelCase					:       Any):
   return tf.clip_by_value(_gelu(_UpperCAmelCase),      -10,      10)



def  __snake_case     (    _UpperCAmelCase					:       Any,      _UpperCAmelCase					:       Any=-1):
   UpperCamelCase     , UpperCamelCase       =  tf.split(_UpperCAmelCase,      2,      axis=_UpperCAmelCase)
   return a * tf.math.sigmoid(_UpperCAmelCase)


if version.parse(tf.version.VERSION) >= version.parse('2.4'):



   def  __snake_case     (    _UpperCAmelCase					:       Union[str, Any]):
      return tf.keras.activations.gelu(_UpperCAmelCase,      approximate=_UpperCAmelCase)

   snake_case_ :  int     =					tf.keras.activations.gelu

   snake_case_ :  int     =					approximate_gelu_wrap
else:
   snake_case_ :  Union[str, Any]     =					_gelu
   snake_case_ :  str     =					_gelu_new


snake_case_ :  List[Any]     =					{
    'gelu': gelu,
    'gelu_10': gelu_aa,
    'gelu_fast': gelu_fast,
    'gelu_new': gelu_new,
    'glu': glu,
    'mish': mish,
    'quick_gelu': quick_gelu,
    'relu': tf.keras.activations.relu,
    'sigmoid': tf.keras.activations.sigmoid,
    'silu': tf.keras.activations.swish,
    'swish': tf.keras.activations.swish,
    'tanh': tf.keras.activations.tanh,
}



def  __snake_case     (    _UpperCAmelCase					:       Optional[int]):
   if activation_string in ACTaFN:
      return ACTaFN[activation_string]
   else:
      raise KeyError(f'function {activation_string} not found in ACT2FN mapping {list(ACTaFN.keys())}')







'''simple docstring'''


def  __snake_case     (    _UpperCAmelCase					:       Optional[int]):
   UpperCamelCase       =  []
   UpperCamelCase       =  []
   UpperCamelCase       =  {
       '''^''': 3,
       '''*''': 2,
       '''/''': 2,
       '''%''': 2,
       '''+''': 1,
       '''-''': 1,
   }  # Priority of each operator
   UpperCamelCase       =  len(_UpperCAmelCase) if (len(_UpperCAmelCase) > 7) else 7

   # Print table header for output
   print(
       '''Symbol'''.center(8),      '''Stack'''.center(_UpperCAmelCase),      '''Postfix'''.center(_UpperCAmelCase),      sep=''' | ''',      )
   print('''-''' * (print_width * 3 + 7))

   for x in infix:
      if x.isalpha() or x.isdigit():
         post_fix.append(_UpperCAmelCase)  # if x is Alphabet / Digit, add it to Postfix
      elif x == "(":
         stack.append(_UpperCAmelCase)  # if x is "(" push to Stack
      elif x == ")":  # if x is ")" pop stack until "(" is encountered
         while stack[-1] != "(":
            post_fix.append(stack.pop())  # Pop stack & add the content to Postfix
         stack.pop()
      else:
         if len(_UpperCAmelCase) == 0:
            stack.append(_UpperCAmelCase)  # If stack is empty, push x to stack
         else:  # while priority of x is not > priority of element in the stack
            while len(_UpperCAmelCase) > 0 and priority[x] <= priority[stack[-1]]:
               post_fix.append(stack.pop())  # pop stack & add to Postfix
            stack.append(_UpperCAmelCase)  # push x to stack

      print(
          x.center(8),      (''''''.join(_UpperCAmelCase)).ljust(_UpperCAmelCase),      (''''''.join(_UpperCAmelCase)).ljust(_UpperCAmelCase),      sep=''' | ''',      )  # Output in tabular format

   while len(_UpperCAmelCase) > 0:  # while stack is not empty
      post_fix.append(stack.pop())  # pop stack & add to Postfix
      print(
          ''' '''.center(8),      (''''''.join(_UpperCAmelCase)).ljust(_UpperCAmelCase),      (''''''.join(_UpperCAmelCase)).ljust(_UpperCAmelCase),      sep=''' | ''',      )  # Output in tabular format

   return "".join(_UpperCAmelCase)  # return Postfix as str



def  __snake_case     (    _UpperCAmelCase					:       str):
   UpperCamelCase       =  list(infix[::-1])  # reverse the infix equation

   for i in range(len(_UpperCAmelCase)):
      if infix[i] == "(":
         UpperCamelCase       =  ''')'''  # change "(" to ")"
      elif infix[i] == ")":
         UpperCamelCase       =  '''('''  # change ")" to "("

   return (infix_2_postfix(''''''.join(_UpperCAmelCase)))[
       ::-1
   ]  # call infix_2_postfix on Infix, return reverse of Postfix


if __name__ == "__main__":
   snake_case_ :  str     =					input('\nEnter an Infix Equation = ')  # Input an Infix equation
   snake_case_ :  Union[str, Any]     =					''.join(Infix.split())  # Remove spaces from the input
   print('\n\t', Infix, '(Infix) -> ', infix_2_prefix(Infix), '(Prefix)')





