...but when money is involved it needs to be 100% correct

If you store your currency as whole numbers of pennies/cents etc, then you will never get roundoffs and have total accuracy upto $/£/? 9 trillion (see machine accuracy).

For a simple explanation of why floating point doesn't give exact results, see Re: Re: Re: Bug? 1+1 != 2.

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon

In reply to Re: Math 101 anyone? by BrowserUk
in thread Math 101 anyone? by smcone

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