Fodelsnummer or Fødselsnummer

This project contains a library for computations (validation and birth date extraction) on Norwegian Personal Identification Numbers in many programming languages. The library works exactly the same in all implementations:

• Java
• C
• C++
• JavaScript
• C#
• PHP
• Python
• Visual Basic

Norwegian Personal Identification Numbers is called fodelsnummer or fødselsnummer in norwegian.

The library has been made with progsbase, a tool for creating rot-resistant programs that are translatable to many programming languages.

The library can also be browsed and tested on the progsbase repository's fodselsnummer page.

For more information about progsbase, check out: progsbase.com.

Usage

The library has the same interface in all programming languages.

Validate

boolean isValidNorwegianPersonalIdentificationNumber(char [] fnummer, StringReference message)

The function takes two inputs: a string, containing a norwegian personal identification number, and a string reference, that will get an error message.

The output is a boolean, true if the number is valid and false if not. If the return is false, message is set to a string explaining the reason.

Extract Birth Date

boolean GetDateFromNorwegianPersonalIdentificationNumber(char[] fnummer, DateReference dateRef, StringReference message)

The function takes a string as input, containing a norwegian personal identification number, a reference to a date and a reference to a string.

The function returns true if successfull and false if not.

If the function succeeds, the date in the date reference is set with three fields: year, month, day.

If the function fails, the string reference message gets an error message.