In this directory you find some examples and simple testing applications
for the fixed point library. The testing application fixed_tst does some
calculations using the fixed_point library in user space. The fixcalc
application implements a simple calculator shell running its textual user
interface in user space and doing the calculations in kernel space (normal
kernel space outside of every cyclic RT-Linux task).

In order to run these applications you have to include the directory ../lib
in your LD_LIBRARY_PATH. If you use the bash you can do this by typing

    export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:../lib"

Then you must compile the applications by typing make (bison and flex must
be installed). After setting your LD_LIBRARY_PATH variable and compiling the
applications you can run the fixed_tst example by typing ./fixed_tst and in
order to run the fixcalc example you have to do the following:

    1. check if you have write permissions on /dev/rtf0
    2. check if you have read permissions on /dev/rtf1
    3. become super user
    4. type insmod rt_fifo_new
    5. type insmod ../bin/rt_fix.o
    6. type insmod ./rt_process.o (not realy a process no RT-Linux tasks used)
    7. type ./fixcalc (a normal user can run the application, too)
    8. type expresssions like:
            -1 * 4 + (2 - 10.03)
    9. hit the return key and watch the results

The fixcalc application terminates as soon as input can not be interpreted.