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 xreal
>>> xreal.Zero()
xreal('0.0000000000000000000)

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import Gpr
>>> Gpr.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 xreal
>>> xreal.Zero()
xreal('0.0000000000000000000)

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import Gpr
>>> Gpr.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 xreal
>>> xreal.One()
xreal('1.0000000000000000000')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import Gpr
>>> Gpr.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 xreal
>>> xreal.PositiveInfinity()
xreal('+Inf')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import Gpr
>>> Gpr.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 xreal
>>> xreal.NegativeInfinity()
xreal('-Inf')

In double precision (64 bit version of xlcalcnet)

>>> from xlcalcnet import Gpr
>>> Gpr.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 xreal
>>> xreal.Nan()
xreal('Nan')

In double precision (64 bit version of xlcalcnet)

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