class_docstr: Diagnosing machine parameters.
  
  Attributes
  ----------
  ibeta : int
      Radix in which numbers are represented.
  it : int
      Number of base-`ibeta` digits in the floating point mantissa M.
  machep : int
      Exponent of the smallest (most negative) power of `ibeta` that,
      added to 1.0, gives something different from 1.0
  eps : float
      Floating-point number ``beta**machep`` (floating point precision)
  negep : int
      Exponent of the smallest power of `ibeta` that, subtracted
      from 1.0, gives something different from 1.0.
  epsneg : float
      Floating-point number ``beta**negep``.
  iexp : int
      Number of bits in the exponent (including its sign and bias).
  minexp : int
      Smallest (most negative) power of `ibeta` consistent with there
      being no leading zeros in the mantissa.
  xmin : float
      Floating point number ``beta**minexp`` (the smallest [in
      magnitude] usable floating value).
  maxexp : int
      Smallest (positive) power of `ibeta` that causes overflow.
  xmax : float
      ``(1-epsneg) * beta**maxexp`` (the largest [in magnitude]
      usable floating value).
  irnd : int
      In ``range(6)``, information on what kind of rounding is done
      in addition, and on how underflow is handled.
  ngrd : int
      Number of 'guard digits' used when truncating the product
      of two mantissas to fit the representation.
  epsilon : float
      Same as `eps`.
  tiny : float
      Same as `xmin`.
  huge : float
      Same as `xmax`.
  precision : float
      ``- int(-log10(eps))``
  resolution : float
      ``- 10**(-precision)``
  
  Parameters
  ----------
  float_conv : function, optional
      Function that converts an integer or integer array to a float
      or float array. Default is `float`.
  int_conv : function, optional
      Function that converts a float or float array to an integer or
      integer array. Default is `int`.
  float_to_float : function, optional
      Function that converts a float array to float. Default is `float`.
      Note that this does not seem to do anything useful in the current
      implementation.
  float_to_str : function, optional
      Function that converts a single float to a string. Default is
      ``lambda v:'%24.16e' %v``.
  title : str, optional
      Title that is printed in the string representation of `MachAr`.
  
  See Also
  --------
  finfo : Machine limits for floating point types.
  iinfo : Machine limits for integer types.
  
  References
  ----------
  .. [1] Press, Teukolsky, Vetterling and Flannery,
         "Numerical Recipes in C++," 2nd ed,
         Cambridge University Press, 2002, p. 31.
docstr: float_conv - convert integer to float (array)
  int_conv   - convert float (array) to integer
  float_to_float - convert float array to float
  float_to_str - convert array float to str
  title        - description of used floating point numbers
code: def __init__(
      self,
      float_conv=float,
      int_conv=int,
      float_to_float=float,
      float_to_str=lambda v: "%24.16e" % v,
      title="Python floating point number",
  ):
      """
  
      float_conv - convert integer to float (array)
      int_conv   - convert float (array) to integer
      float_to_float - convert float array to float
      float_to_str - convert array float to str
      title        - description of used floating point numbers
  
      """
      # We ignore all errors here because we are purposely triggering
      # underflow to detect the properties of the runninng arch.
      with errstate(under="ignore"):
          self._do_init(
              float_conv, int_conv, float_to_float, float_to_str, title
          )
  
file_path: catboost/contrib/python/numpy/py2/numpy/core/machar.py
imports: from __future__ import division, absolute_import, print_function
  from numpy.core.fromnumeric import any
  from numpy.core.numeric import errstate
  from numpy.core.overrides import set_module
label_desc: Use image node_id 1 to create a new MachAr object from inherited base classes: object with example: obj = MachAr(float_conv, int_conv, float_to_float, float_to_str, title)