Igor Delovski Board

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

Par prakticnih pitanja vezana uz izvjestaje

"Covjek hoce za neki proizvod imati maloprodajnu cijenu 100,00 kn. Ja
unosim cijenu veleprodajnu koja je unesena u decimalnom formatu (koriste se
2 decimale). To je 100/1,22=81,97 kn. Dakle, covjek ocekuje da kada u
stavku na racunu doda 6 komada te robe total bude 600 kn sto naravno nije.
Kako se prakticno rjesava ovaj problem?"

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

CodeGuru: Error Detection Based on Check Digit Schemes,
by Jeffrey Walton

"A Check Digits is an alphanumeric character added to a number to detect
human errors. This article discusses the following Check Digit Schemes:

Mod 9 Scheme
Mod 7 Scheme
Mod 11 Scheme
3-Weight Method
IBM Scheme
UPC Scheme
Verhoeff Algorithm
ISO 7064 Mod N/N+1"

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

JoS: The meaning of an American yearly salary

"Salaries in the U.S. are usually specified as a yearly sum, say $70K. Now,
what does this sum include ?"

Ike · Kapetan Joined: 17 Jun 2006 Posts: 3136 Location: Europe

Apple List: 64 bit - double variables

If you are dealing with monetary values, you almost certainly should not be
using base-2 arithmetic. See http://www2.hursley.ibm.com/decimal/ and
http://www2.hursley.ibm.com/decimal/decifaq1.html for more information.

..., you can use a library such as decNumber: http://www.alphaworks.ibm.com/tech/decNumber

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

Fractured YEARFRAC and Discounted DISC

"Why should day counting be complicated? Just count how many days
between the two dates and you are done, right? Indeed, everywhere but
in finance it is simple.

Some of the complications are for historical reasons, to try to make hand
calculations easier in the pre-computer era. Also, these conventions made
the calendar more regular, so financial instruments were less distorted by
calendar irregularities like leap years or variable length months. If you
assume a year is exactly 360 days in 12 months with 30 days each, then
some things in life are simpler."

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

TheMatchbox - 7 Top Tips for Coding With Currency

"As anyone who’s ever made an e-commerce system knows, money is
everything. No, really if you don’t get your financial sums right then you
can’t hope to build a successful online business (and may find yourself
creating potential legal issues with the tax man)."