Machine constants, general

Machine constants, general#

Zero, positive zero#

property ctx.zero#

where ctx is math53, ctxboost or ctxflint.

Returns \(+0\).

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Zero()
ereal('0.0000000000000000000)

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Zero()
0.0

Negative zero#

property ctx.negzero#

where ctx is math53, ctxboost or ctxflint.

Returns \(-0\).

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Zero()
ereal('0.0000000000000000000)

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Zero()
0.0

One#

property Cxt.one#

where ctx is math53, ctxboost or ctxflint.

Returns \(1\)

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.One()
ereal('1.0000000000000000000')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.One()
1.0

Positive infinity#

ctx.inf()#

where ctx is math53, ctxboost or ctxflint.

Returns \(+\infty\)

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.PositiveInfinity()
ereal('+Inf')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.PositiveInfinity()
+Inf

Negative infinity#

ctx.neginf()#

where ctx is math53, ctxboost or ctxflint.

Returns the representation of \(-\infty\)

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.NegativeInfinity()
ereal('-Inf')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.NegativeInfinity()
-Inf

NaN (Not a Number)#

ctx.nan()#

where ctx is math53, ctxboost or ctxflint.

Returns NaN (Not a Number).

In extended precision (32 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Nan()
ereal('Nan')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import ereal
>>> ereal.Nan()
Nan
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