Abs

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Abs

Returns the absolute value of a number.

Syntax

Declare Function Abs ( ByVal number As Integer ) As Integer
Declare Function Abs ( ByVal number As UInteger ) As UInteger
Declare Function Abs ( ByVal number As Double ) As Double

Parameters

• number

Description

The absolute value of a number is its positive magnitude. If a number is negative, its value will be negated and the positive result returned. For example, Abs(-1) and Abs(1) both return 1. The required number argument can be any valid numeric expression.
Unsigned numbers will be treated as if they were signed, i.e. if the highest bit is set the number will be treated as negative, and its value negated.
The value returned will be greater than or equal to 0, with the exception of signed integers containing the lowest possible negative value that can be stored in its type, in which case negating it will overflow the result.

The Abs unary Operator can be overloaded with user defined types.

Return Value

The absolute value of number.

Remarks

Usage

result = Abs( number )

Dialect Differences

• In the -lang qb dialect, this operator cannot be overloaded.

Differences from QB

• None

See also

• Sgn
• Operator

Examples

Dim n As Integer

Print Abs( -1 )

Print Abs( -3.1415 )

Print Abs( 42 )

Print Abs( n )

n = -69

Print Abs( n )

Output:

1
3.1415
42
0
69

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Category: Mathematical Functions
Kind: function

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Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.