CDbl
Converts numeric or string expression to Double precision floating point
result = CDbl( numeric expression )
result = CDbl( string expression )
result = CDbl( user defined type )
expression
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 expression, it is first converted to numeric by using Val.
Syntax
Usage
result = CDbl( numeric expression )
result = CDbl( string expression )
result = CDbl( user defined type )
Parameters
expression
a numeric, string, or pointer expression to cast to a Double value
datatypeany numeric, string, or pointer data type
typenamea user defined type
Return 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 expression, it is first converted to numeric by using Val.
Example
' Using the CDBL function to convert a numeric value
'Create an DOUBLE variable
Dim numeric_value As Double
'Convert a numeric value
numeric_value = CDbl(-12345678.123)
'Print the result, should return -12345678.123
Print numeric_value
Sleep
'Create an DOUBLE variable
Dim numeric_value As Double
'Convert a numeric value
numeric_value = CDbl(-12345678.123)
'Print the result, should return -12345678.123
Print numeric_value
Sleep
Differences from QB
- None
See also
