NumPy Data type: MachAr() function

Last update on August 19 2022 21:51:09 (UTC/GMT +8 hours)

numpy.MachAr() function

The MachAr() function is used to inspect type precision limits.

Version: 1.15.0

Syntax:

numpy.MachAr(float_conv=<class 'float'>, int_conv=<class 'int'>, float_to_float=<class 'float'>, float_to_str=<function MachAr.<lambda>>, title='Python floating point number')

Parameter:

Name	Description	Required / Optional
float_conv	Function that converts an integer or integer array to a float or float array. Default is float.	Optional
int_conv	Function that converts a float or float array to an integer or integer array. Default is int.	Optional
float_to_float	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.	Optional
float_to_str	Function that converts a single float to a string. Default is lambda v:'%24.16e' %v.	Optional
title	Title that is printed in the string representation of MachAr.	Optional

Example: numpy.MachAr() function

>>> import numpy as np
>>> machar = numpy.MachAr(float_conv=numpy.float32)
>>> print(machar)
Machine parameters for Python floating point number
---------------------------------------------------------------------
ibeta=2 it=23 iexp=8 ngrd=0 irnd=5
machep=-23     eps=  1.1920928955078125e-07 (beta**machep == epsilon)
negep =-24  epsneg=  5.9604644775390625e-08 (beta**epsneg)
minexp=-126   xmin=  1.1754943508222875e-38 (beta**minexp == tiny)
maxexp=128    xmax=  3.4028234663852886e+38 ((1-epsneg)*beta**maxexp == huge)
---------------------------------------------------------------------

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