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error 404 baseConvert | revDocs | RunRev
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Product Edition
Version
baseConvert
Type
Function
Syntax
baseConvert(number,originalBase,destinationBase)
See Also
Introduced
1.0
Environment
Desktop, Web and Server
Platform Support
MacOS,Mac OS X,Windows,Linux
Security
None required
Summary
Converts a number from one base to another.
Examples

baseConvert(16,10,2) -- yields 10000, which is 16 in base 2
baseConvert(27,10,16) -- yields 1B, which is 27 in base 16
baseConvert("1C",16,10) -- yields 28, the base-10 equivalent of 1C

Use the baseConvert function to provide input or output of numbers in a base other than base 10: for example, in hexadecimal (base 16) or binary (base 2).

Parameters:

The number is the number to be converted, expressed in its original base. The number must be an integer between zero and 4,294,967,295 (2^32 - 1). If the number includes non-digits (as, for example, a base-16 number can include letters A-F), enclose the number in quotes.

The originalBase is an integer between 2 and 36.

The destinationBase is an integer between 2 and 36.

Value:

The baseConvert function returns a number, expressed in the destinationBase.

Comments:

The everyday decimal number system is called "base 10" because we count from 1 to 9, and the tenth digit moves over to the tens place and is written` 10`: one group of ten, plus zero extra ones. Similarly, a number like` 384 `means one group of a hundred (10^2), plus eight groups of ten, plus four leftover ones.

It is possible to write numbers in other bases. For example, suppose you want to write the number six in base 4. In base 4, we count from 1 to 3, and the fourth digit moves over to the "fours place". So the numbers from one to six, in base 4, are written "`1`,` 2`,` 3`,` 10`,` 11`,` 12`". The number` 12 `in base 4 means one group of four, plus two leftover ones. This same number is written as` 6 `in base 10.

If the base is greater than 10, then digits greater than 9 are expressed as capital letters: A is the digit ten, B is the digit eleven, and so on.

Revolution always does math in base 10, so if you want to perform mathematical calculations such as addition on a number in another base, you must first convert the number to base 10, do the calculation, then convert back to the original base. Here is an example:

` function hexSum firstAddend, secondAddend`

` ``-- adds together two hexadecimal numbers`

` put baseConvert(firstAddend,16,10) into convertedAddend1`

` put baseConvert(secondAddend,16,10) into convertedAddend2`

` put convertedAddend1 + convertedAddend2 into baseTenSum`

` return baseConvert(baseTenSum,10,16)`

` end hexSum`

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