type t = [ `MachAr | `Object ] Obj.tval of_pyobject : Py.Object.t -> tval to_pyobject : [> tag ] Obj.t -> Py.Object.tval create :
?float_conv:Py.Object.t ->
?int_conv:Py.Object.t ->
?float_to_float:Py.Object.t ->
?float_to_str:Py.Object.t ->
?title:string ->
unit ->
tDiagnosing 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.
val ibeta : t -> intAttribute ibeta: get value or raise Not_found if None.
val ibeta_opt : t -> int optionAttribute ibeta: get value as an option.
val it : t -> intAttribute it: get value or raise Not_found if None.
val it_opt : t -> int optionAttribute it: get value as an option.
val machep : t -> intAttribute machep: get value or raise Not_found if None.
val machep_opt : t -> int optionAttribute machep: get value as an option.
val eps : t -> floatAttribute eps: get value or raise Not_found if None.
val eps_opt : t -> float optionAttribute eps: get value as an option.
val negep : t -> intAttribute negep: get value or raise Not_found if None.
val negep_opt : t -> int optionAttribute negep: get value as an option.
val epsneg : t -> floatAttribute epsneg: get value or raise Not_found if None.
val epsneg_opt : t -> float optionAttribute epsneg: get value as an option.
val iexp : t -> intAttribute iexp: get value or raise Not_found if None.
val iexp_opt : t -> int optionAttribute iexp: get value as an option.
val minexp : t -> intAttribute minexp: get value or raise Not_found if None.
val minexp_opt : t -> int optionAttribute minexp: get value as an option.
val xmin : t -> floatAttribute xmin: get value or raise Not_found if None.
val xmin_opt : t -> float optionAttribute xmin: get value as an option.
val maxexp : t -> intAttribute maxexp: get value or raise Not_found if None.
val maxexp_opt : t -> int optionAttribute maxexp: get value as an option.
val xmax : t -> floatAttribute xmax: get value or raise Not_found if None.
val xmax_opt : t -> float optionAttribute xmax: get value as an option.
val irnd : t -> intAttribute irnd: get value or raise Not_found if None.
val irnd_opt : t -> int optionAttribute irnd: get value as an option.
val ngrd : t -> intAttribute ngrd: get value or raise Not_found if None.
val ngrd_opt : t -> int optionAttribute ngrd: get value as an option.
val epsilon : t -> floatAttribute epsilon: get value or raise Not_found if None.
val epsilon_opt : t -> float optionAttribute epsilon: get value as an option.
val tiny : t -> floatAttribute tiny: get value or raise Not_found if None.
val tiny_opt : t -> float optionAttribute tiny: get value as an option.
val huge : t -> floatAttribute huge: get value or raise Not_found if None.
val huge_opt : t -> float optionAttribute huge: get value as an option.
val precision : t -> floatAttribute precision: get value or raise Not_found if None.
val precision_opt : t -> float optionAttribute precision: get value as an option.
val resolution : t -> floatAttribute resolution: get value or raise Not_found if None.
val resolution_opt : t -> float optionAttribute resolution: get value as an option.
val to_string : t -> stringPrint the object to a human-readable representation.
val show : t -> stringPrint the object to a human-readable representation.
val pp : Format.formatter -> t -> unitPretty-print the object to a formatter.