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Do you know Checksum algorithm?
Message
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
00339989
Message ID:
00340005
Views:
44
Hi Boris,

You should be able to find it on the MSDN CD that ships with VS or VFP 6. Anyway it doesn't contain much info (see below)



SYS(2007) Algorithm for Checksum
Last reviewed: June 27, 1995
Article ID: Q101289


The information in this article applies to:
Microsoft FoxPro for Windows, versions 2.5, 2.5a, and 2.5b
Microsoft FoxPro for MS-DOS, versions 2.0, 2.5, 2.5a, and 2.5b
Microsoft FoxPro for Macintosh, version 2.5b
The SYS(2007) function returns the checksum value of the character expression . The correct syntax is SYS(2007,). A checksum can be used to test the validity of data or to compare two character expressions.

NOTE: Checksum is a "byte-oriented CRC-16" algorithm. The exact logic was last published in the February 1986 edition of "Dr. Dobbs Journal."




PS: In the future, please use more descriptive text in the subject line.

>Maybe some body have a copy of article Q101289 SYS(2007) Algorithm for Checksum looks like it's been removed from Microsoft site
kenweber
GCom2 Solutions
Microsoft Certified Professional

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