[[CDBL]] converts a value to the closest [[DOUBLE]]-precision value.



{{PageSyntax}}
: {{Parameter|doubleValue#}} = [[CDBL]]({{Parameter|expression}})


{{Parameters}}
* {{Parameter|expression}} is any [[TYPE]] of literal or variable numerical value or mathematical calculation.


{{PageDescription}}
* Rounds to the closest [[DOUBLE]] floating decimal point value.
* Also can be used to define a value as [[DOUBLE]]-precision up to 15 decimals.


{{PageExamples}}
''Example:'' Prints a double-precision version of the single-precision value stored in the variable named A.
{{CodeStart}}
 A = 454.67
 {{Cl|PRINT}} A; {{Cl|CDBL}}(A)
{{CodeEnd}}
{{OutputStart}} 454.67 454.6700134277344
{{OutputEnd}}
: The last 11 numbers in the double-precision number change the value in this example, since A was previously defined to only two-decimal place accuracy.


{{PageSeeAlso}}
* [[CINT]], [[CLNG]] 
* [[CSNG]], [[_ROUND]]


{{PageNavigation}}
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