code: def reverse64(v: int) -> int:
      """Reverse a 64-bit integer bitwise.
  
      We do this by breaking it up into 8 bytes. The 64-bit integer is then the
      concatenation of each of these bytes. We reverse it by reversing each byte
      on its own using the REVERSE_BITS_TABLE above, and then concatenating the
      reversed bytes.
  
      In this case concatenating consists of shifting them into the right
      position for the word and then oring the bits together.
      """
      assert v.bit_length() <= 64
      return (
          (REVERSE_BITS_TABLE[(v >> 0) & 0xFF] << 56)
          | (REVERSE_BITS_TABLE[(v >> 8) & 0xFF] << 48)
          | (REVERSE_BITS_TABLE[(v >> 16) & 0xFF] << 40)
          | (REVERSE_BITS_TABLE[(v >> 24) & 0xFF] << 32)
          | (REVERSE_BITS_TABLE[(v >> 32) & 0xFF] << 24)
          | (REVERSE_BITS_TABLE[(v >> 40) & 0xFF] << 16)
          | (REVERSE_BITS_TABLE[(v >> 48) & 0xFF] << 8)
          | (REVERSE_BITS_TABLE[(v >> 56) & 0xFF] << 0)
      )
  
file_path: catboost/contrib/python/hypothesis/py3/hypothesis/internal/conjecture/floats.py
imports: from array import array
  from hypothesis.internal.floats import float_to_int, int_to_float
label_desc: Use image node_id 5 for calling a global function with example usage: reverse64(v) and returns: unknown