return the default value of zero - Maple Help

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Default0 - return the default value of zero

DefaultOverflow - return the default overflow value

DefaultUnderflow - return the default underflow value

Calling Sequence

Default0()

DefaultOverflow(s)

DefaultUnderflow(s)

Parameters

s

-

either 1 or -1

Description

• 

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.

Thread Safety

• 

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

• 

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

Examples

Default0

0.

(1)

DefaultUnderflow1

0.

(2)

DefaultUnderflow1

0.

(3)

DefaultOverflow1

Float∞

(4)

HFloatDefaultUnderflow1

0.

(5)

See Also

exceptions, float, HFloat, numeric_types, rounding


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