String Format in javelin

PlaneTeeR

Hello everybody,

We have a problem with the display of our bikecomputer. We need to format the output numbers to 2 digits. We have a method in Java: String formattedValue = String.format("%5.2f",value); But the format method of String is not supported until version 1.5.0. Is there a method in javelin to do this?

Greetings

Johnny & Daniel
The Netherlands

Peter Verkaik

The Format class can display integer values
using
int k = 7;
Format.printf("%02d",k)
which will display 07
The Format class can be found here
http://groups.yahoo.com/group/JavelinCode/files/Javelin%20Stamp%20IDE/lib/stamp/util/text/

There is the f3 class that stores floats with 3 digit accuracy and it has
a printf() method (which calls Format to do the actual printing).
http://groups.yahoo.com/group/JavelinCode/files/Javelin%20Stamp%20IDE/lib/stamp/math/


The Format class can not print float values.
You may look at the Float32 class (32bit floats) for a print method
http://www.parallax.com/javelin/underdev.asp

regards peter

PlaneTeeR

Thanks Peter

We will look into the code and try it on our stamp.

Johnny

PlaneTeeR

Hmm

I think my question was wrong! I meant i needed a fixed floating point, for example:

We get 3,445224 but we want to show it as 3,44.

Is that an option of this format class?

Thanks Johnny

Peter Verkaik

The Float32 class has two methods of interest:
intValue() converts a Float32 object (IEEE standard 784)
to an integer, so if you multiply your F by 100, then
convert to int R, then printf("%d.",R/100) and printf(%02d",R%100)
you get your 2 decimals.
The other method is toString, from which you can print characters
up to 2 decimals after the decimal point.

Question: the source obviously is pc java.
How do you calculate/receive your floats on the javelin (uM_FPU ??).

regards peter