how come <%= 19043.0 - 19032.6 %>

display 10.4000000000015

how can I avoid this and get a proper result?

Thanks

how come <%= 19043.0 - 19032.6 %>

display 10.4000000000015

how can I avoid this and get a proper result?

Thanks

how come <%= 19043.0 - 19032.6 %>

It's a floating point error. See here:

http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems

display 10.4000000000015

how can I avoid this and get a proper result?

Thanks

Use integer arithmetic instead. For example, use cents instead of

dollars by multiplying by 100 and converting to Integer. For other

numbers you will need to decide what precision you need. 4 decimal

places? Multiply by 10,000.

Cheers,

Dave

>

>

>

> how come <%= 19043.0 - 19032.6 %>

>

> display 10.4000000000015

>

> how can I avoid this and get a proper result?

>Look up bigdecimal

You'll also need edge rails if you plan on storing accurate values as

decimal/numeric in your db.

Isak