Float Division with wrong Answers

SlimG · Joined: 03 Dec 2004 Posts: 6

Im trying to do variable divisions with answers between 0 and 360. The problem Im having is that whenever the answer is greater than 255 I don't get the right answer.
(Im using the PIC 16f873)

e.g 7/9*360=280

instead the answer I get is 24
but it works fine with answers under 256

I need the answer to be 280 so that I can display it as a Phase Angle between two sinusoidal waveforms.

Thanks

bluetooth · Joined: 08 Jan 2005 Posts: 74

With:

Ttelmah · Guest

The division is fine.
The _type_ of your target variable is wrong.
If you are putting this result into an integer, it can only hold 0-255. Hence it 'wraps', and the result given is 280-256 = 24...

Best Wishes