April 2002
Intermediate to advanced
688 pages
19h 51m
English
Content preview from VB.NET Language in a Nutshell, Second Edition
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Name
Sign Function
Class
System.Math
Syntax
Sign(value)-
value(required; any numeric type, including Decimal) A numeric expression
Return Value
Integer
Description
Determines the sign of a number
Rules at a Glance
The return value of the Sign function is
determined by the sign of value, as
follows:
|
If number is |
Sign returns |
|---|---|
|
Positive |
1 |
|
Zero |
0 |
|
Negative |
-1 |
Programming Tips and Gotchas
Sign is useful in cases in which the sign of a quantity defines the sign of an expression. For example:
lngResult = lngQty * Sgn(lngValue)
This is a Shared member, so it can be used without creating any objects.
If you are using the Sign function to evaluate a result to
False(0) orTrue(any nonzero value), you could use the CBool function instead.A major use for Sign is to determine the sign of an expression.
VB.NET/VB 6 Differences
The name of this function has changed. In VB 6, it is named Sgn. In VB.NET, it is named Sign and is a member of the Math class of the System namespace.
See Also
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