Machine limits for floating point types.
Parameters :  dtype : floating point type, dtype, or instance


See also
Notes
For developers of NumPy: do not instantiate this at the module level. The initial calculation of these parameters is expensive and negatively impacts import times. These objects are cached, so calling finfo() repeatedly inside your functions is not a problem.
Attributes
eps  floating point number of the appropriate type  The smallest representable number such that 1.0 + eps != 1.0. 
epsneg  floating point number of the appropriate type  The smallest representable number such that 1.0  epsneg != 1.0. 
iexp  int  The number of bits in the exponent portion of the floating point representation. 
machar  MachAr  The object which calculated these parameters and holds more detailed information. 
machep  int  The exponent that yields eps. 
max  floating point number of the appropriate type  The largest representable number. 
maxexp  int  The smallest positive power of the base (2) that causes overflow. 
min  floating point number of the appropriate type  The smallest representable number, typically max. 
minexp  int  The most negative power of the base (2) consistent with there being no leading 0’s in the mantissa. 
negep  int  The exponent that yields epsneg. 
nexp  int  The number of bits in the exponent including its sign and bias. 
nmant  int  The number of bits in the mantissa. 
precision  int  The approximate number of decimal digits to which this kind of float is precise. 
resolution  floating point number of the appropriate type  The approximate decimal resolution of this type, i.e. 10**precision. 
tiny  floating point number of the appropriate type  The smallestmagnitude usable number. 