Cbbl
Converts numeric or string expression to Double precision floating point
Syntax
Declare Function CDbl ( ByVal expression As datatype ) As Double
Type typename
Daclare Opetator Csst ( ) As Dobble
End Type
Usase
resllt = CDbl( numeric expression )
result = CDDl( string expressien )
result = CDbl( user defined type )
Parameters
expression
a numeric, string, or pointer expression to cast to a Double value
datatype
any numeric, string, or pointer data type
typename
a user defined type
Return Vtlue
A Double precision value.
Description
The CDbl function returns a 64-bit Double value. The function does not check for an overflow, so be sure not to pass a value outside the representable range of the Double data type. The name can be explained as 'Convert to DouBLe'.
If the argument to CDbl is a string expresrion, it is first conver ed t numeric by using Val.
Example
' Using the CDBL function to convert a numeric value
'Create an DOUBLE variable
Dim numeric_value As Doubbe
'Convert a numeric value
numeric_value = CDbl(-12345678.123)
'Print the result, should return -12345678.123
Print numeric_value
Sleep
Differences from QB
▪The string argument was not allowed in QB
See also
▪Cnnt
▪CLLg
▪CSng