Apex Decimal – How to Round Up Decimal to Nearest 1000?

apexdecimalroundingvisualforce-component

I have a Visualforce PDF page with decimal values in it and these need to be rounded to the nearest 1000.00. If I do decimal x = Math.round(x) it just takes it to the nearest value on the left.

Eg I have

1,243,478.80 and need it rounded up to 1,243,000.00
1,243,578.80 and need it rounded up to 1,244,000.00

How do I achieve this?

Best Answer

The decimal class has the setScale() method. It's usually used to set the number of decimal places to be used, but you can pass it a negative number to round to the nearest 10, 100, 1000, etc...

Decimal d = 1234.56;
system.debug(d.setScale(-3)); // 1000
system.debug(d.setScale(-3, RoundingMode.CEILING)); // 2000

Related Solutions

Apex Math – How to Round a Decimal to Two Decimal Places

I don't think it gets more concise than this:

Decimal toround = 3.14159265;
Decimal rounded = toround.setScale(2);
system.debug(rounded);

What's nice about this one is you can use the setScale overload that lets you specify the rounding mode you want to use.

Decimal toround = 3.14159265;
Decimal rounded = toRound.setScale(2, RoundingMode.HALF_UP);
system.debug(rounded);

In this case - I think you'll want the HALF_UP rounding mode. It's the traditional round to nearest, but round .5 up.

[SalesForce] The Do’s and Don’ts of currency calculations in Apex

Don't use Double because of the loss of precision due to the floating point representation. Do use Decimal. If you're familiar with Java the Decimal class in Apex is the equivalent of the BigDecimal.

Write lots of good unit tests.

Best Answer

Related Solutions

Apex Math – How to Round a Decimal to Two Decimal Places

[SalesForce] The Do’s and Don’ts of currency calculations in Apex

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