The Default0() function returns +0.0 unless the rounding mode is -infinity, in which case it returns -0.0.

The DefaultOverflow() function returns the system's current default overflow value. The default overflow value is always s * Float(infinity).

The DefaultUnderflow() function returns the system's current default underflow value. The default underflow value is always $0.$.

The returned values are all software floating-point format. To determine the appropriate hardware floating-point values, enclose the function call in the HFloat constructor.

The Default0, DefaultOverflow and DefaultUnderflow commands are thread-safe as of Maple 15.

For more information on thread safety, see index/threadsafe.

$\mathrm{Default0}\left(\right)$

$0.$

$\mathrm{DefaultUnderflow}\left(1\right)$

$0.$

$\mathrm{DefaultUnderflow}\left(-1\right)$

$\mathrm{-0.}$

$\mathrm{DefaultOverflow}\left(1\right)$

$Float\left(\mathrm{\infty }\right)$

$\mathrm{HFloat}\left(\mathrm{DefaultUnderflow}\left(-1\right)\right)$

$\mathrm{-0.}$