VB.NET Language in a Nutshell, Second Edition

Name

Sqrt Function

Class

System.Math

Syntax

Sqr(d)

d (required; Double)

Any numeric expression greater than or equal to 0

Return Value

A Double containing the square root of d

Description

Calculates the square root of a given number

Rules at a Glance

• d must be equal to or greater than zero, or runtime error 5, “Invalid procedure call or argument,” occurs.

• This is a Shared member, so it can be used without creating any objects.

VB.NET/VB 6 Differences

The square root function in VB 6 is named Sqr, and it is an intrinsic VB function. In the .NET Framework, it is named Sqrt, and it is a member of the Math class in the System namespace.