CLng

FreeBASIC

CLng
 
Converts numeric or string expression to Long

Syntax

Declare Function CLng ( ByVal expression As datatype ) As Long

Type typename
End Type

Usage

result = CLng( numeric expression )
result = CLng( string expression )
result = CLng( user defined type )

Parameters

expression
a numeric, string, or pointer expression to cast to a Long value
datatype
any numeric, string, or pointer data type
typename
a user defined type

Return Value

A Long value.

Description

The CLng function rounds off the decimal part and returns a 32-bit Long value. The function does not check for an overflow, and results are undefined for values which are less than -2 147 483 648 or larger than 2 147 483 648.

The name can be explained as 'Convert to LoNG'.

If the argument is a string expression, it is converted to numeric by using ValInt.

Example


' Using the CLNG function to convert a numeric value

'Create an LONG variable
Dim numeric_value As Long

'Convert a numeric value
numeric_value = CLng(-300.23)

'Print the result, should return -300
Print numeric_value
Sleep


Differences from QB

  • The string argument was not allowed in QB

See also