CDBL - mkilgore/QB64pe GitHub Wiki

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

doubleValue# = CDBL(expression)

• expression is any TYPE of literal or variable numerical value or mathematical calculation.

• Rounds to the closest DOUBLE floating decimal point value.
• Also can be used to define a value as DOUBLE-precision up to 15 decimals.

Example: Prints a double-precision version of the single-precision value stored in the variable named A.

 A = 454.67
 PRINT A; CDBL(A)

 454.67 454.6700134277344

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.

• CINT, CLNG
• CSNG, _ROUND