math ops inside hal

hallo forum!

can i do some math inside hal?

for example, i have this:
net joy-speed halui.jog-speed <= hidcomp.0.Slider.fvalue

but Slider value goes from -1 to 1 and unfortunately real jog speed goes from -1 to 1 mm/min...

i would like to multiply this value per ..let's say 1000, or mapping the value to 0-1000.

is it possible in some way?

thanks, davide.

p.s. i forgot to say i'm on 2.5

thanks! it works.
i could do it with hidconfig, but this way i learn some more.
i need other commands into hal, is there a link with the list of all possible commands? i can't find..

thanks!

founded, sorry..
www.linuxcnc.org/docview/html/hal_components.html