Software Venture Consulting

FileMaker Pro downloads & Resources
FileMaker Custom Functions
FileMaker Web Viewer Examples
FileMaker Pro & Lasso Consulting
Training
FileMaker Books
FileMaker Articles
FileMaker Error Reference

Free Web Tools
Free FileMaker Tools

Personal Pages
Videos
Adventures
Links

Shopping Cart
Shopping Cart

Search:

Free Newsletter
Signup


Contact


Privacy Policy



FileMaker is a registered trademark of FileMaker, Inc. in the U.S. and other countries.

 

 FileMaker Pro Custom Functions

List  |  Show Random  |  Upload  |  Add This to Your Site

ChecksumAdler32 ( text ; seed1 ; seed2 )

Rate this function:  

RatingRatingRatingRatingRating
  Average rating: 4.3  (39 votes)
  Discuss this Custom Function

Vaughan Bromfied, Vaughan Bromfield design
http://google.com

Creates a checksum of the input text bases on the Adler-32 algorithm.

Sample Input:
ChecksumAdler32 ( "wikipedia" ; 1 ; 0 )
Sample Output:
319161272


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

ChecksumAdler32 ( text ; seed1 ; seed2 )

The initial values for seed1 and seed2 must be 1 and 0 respectively.

Adler-32 is a checksum algorithm which was invented by Mark Adler.
This custom function was written by Vaughan Bromfield <vbromfield@optusnet.com.au>.

This function is based on the algorithm published on the Adler-32 page on Wikipedia (accessed 2010-02-17)

http://en.wikipedia.org/wiki/Adler-32

The published algorithm used ASCII encoding and returns a hexadecimal result; this cf implementation uses Unicode encoding and returns a decimal (base 10) result.

There may be other differences.

All care taken but no responsibility. Your mileage may vary.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

Could the people that rate the function poorly please add a comment to let me know what the disappointment is. Thanks - Vaughan.

Vaughan Bromfield, Sydney, Australia
November 11, 2010 8:35pm

Make a comment about this Custom Function (please try to keep it brief & to the point). Anyone can post:

Your Name:
City/Location:
Comment:
characters left. If you paste in more than 1500 characters, it will be truncated. Discuss the function - advertisements and other useless posts will be deleted.
Answer 9 + 1 =
Search for Custom Functions:

Custom Functions Widget
Download the Custom Function Dashboard Widget for OS X
Keep all the latest Custom Functions right at your fingertips!

Newest Custom Functions:

1. CompareVersions ( versionA ; versionB )
  (Wed, Jan 17, 1:23pm)
2. WorkingDateList (StartDate;EndDate;HolidayList)
  (Fri, Jan 12, 9:30am)
3. _cf_Returns.Drawdown ( PeriodCount ; IncomingArray ; DrawdownSoFar ; MaxDrawdown ; Type )
  (Wed, Jan 10, 8:08pm)
4. LastMonth_withYear ( Date2Process )
  (Wed, Jan 10, 10:46am)
5. list.ToSqlIn ( theList )
  (Sun, Jan 07, 7:29am)
6. fnValidMBI ( MBI )
  (Sat, Jan 06, 10:29am)
7. mapJoin(pre; sep; post; str; i; values)
  (Fri, Jan 05, 11:48am)
8. CheckDigit_swissUID ( swissUID )
  (Thu, Jan 04, 6:06am)

RSS Feed of Custom Functions