Positive number to negative number

PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!

Moderator: General Moderators

Post Reply
User avatar
JayBird
Admin
Posts: 4524
Joined: Wed Aug 13, 2003 7:02 am
Location: York, UK
Contact:

Positive number to negative number

Post by JayBird »

Say i have the figure 28.35

What is the best way to make that number negative i.e. -28.35?

Thanks

Mark
User avatar
twigletmac
Her Royal Site Adminness
Posts: 5371
Joined: Tue Apr 23, 2002 2:21 am
Location: Essex, UK

Post by twigletmac »

Multiply it by -1.

Mac
User avatar
JayBird
Admin
Posts: 4524
Joined: Wed Aug 13, 2003 7:02 am
Location: York, UK
Contact:

Post by JayBird »

what about subtracting from 0?
User avatar
twigletmac
Her Royal Site Adminness
Posts: 5371
Joined: Tue Apr 23, 2002 2:21 am
Location: Essex, UK

Post by twigletmac »

Same effect. Personally I would use the multiplication option as it would make it clearer to me later on what I was trying to achieve. The best way would be the one that would do that for you :).

Mac
Post Reply