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pow() function ARM assembler

The_1ted
By The_1ted
in Programming
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Hi,

 

I am trying to calculate the pow()-function in assembler.

The final goal is to make a gamma correction on a grayscale image.

 

So I need this formula in assembler:

 

newPixel = ((oldPixel/255)^gammaFactor)*255

 

gammaFactor is (and must be) a real number.

 

I'm thankful for every idea!

Greetings from Germany!

CPU: AMD FX-8350 @4.2GHz cooled by Corsair H100 | Mainboard: ASUS ROG Crosshair V Formula-Z | GPU: XFX HD7970 DD 3GB | RAM: 16GB G.Skill RipjawsX | Case: ANTEC P280 windowed | PSU: beQuiet! 650W DarkPower Pro

Now @ University in Munich: Games Engineering!!!!

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The problem is, there is now POW command in ARM assembler (at least none that I know of)

CPU: AMD FX-8350 @4.2GHz cooled by Corsair H100 | Mainboard: ASUS ROG Crosshair V Formula-Z | GPU: XFX HD7970 DD 3GB | RAM: 16GB G.Skill RipjawsX | Case: ANTEC P280 windowed | PSU: beQuiet! 650W DarkPower Pro

Now @ University in Munich: Games Engineering!!!!

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