pow() function call on ARM core

Hi,

I am using OMAP L138.

In our application, we have an algorithm that needs to call pow() function. There are ~ 1024 points we need to convert from dBm to watt, it takes ~ 40 ms in total.

double power_watt[i] =  pow(10,(power_dBm[i]-30.0)/10.0);

My understading is that ARM has no FPU, so the pow() function (from standard library) is implemented in software.

Any suggestion to make pow() function faster ?

There is a coprocessor CP15 in ARM, not sure can that help ?

Any suggestion will be great ?

rgds,

kc Wong