Trig functions in C18 3.10

[psh]

From experience we stay away from PIC floating point in our team. Its emulated, bloated and problematic to debug. It was even worse in the 2004 and 2005 years when the processors only had 32KB.

How widespread is the use of floating point by the teams out there?

>Per

[Guy Davidson]

Originally Posted by psh

How widespread is the use of floating point by the teams out there?

We avoid it if at all possible, and never once have we found it impossible to avoid. In short, we haven't used it. We just make sure that we multiply two integers before diving them (ex in a PID calculation with Kp being 33 / 100 we do 33 * delta / 100 rather than 33 / 100 * delta).

[kaszeta]

Originally Posted by psh

How widespread is the use of floating point by the teams out there?

In recent years, Team 95 has been around 50/50. Two years ago we prototyped an omnidrive that worked in field coordinates, and we did sin(), cos(), asin(), and acos() every loop, with no problems.

And last year, our infrared ranging system used lots of floating point as well, with no real problems, although I did help the students develop a fixed-point equivalent (we never subbed it in, however).

[comphappy]

did this ever get resolved? Could someone point me in the direction of one that does work with the new code?