def METHOD_NAME(in1,in2,outfile):
    hdu1=fits.open(in1)
    hdu2=fits.open(in2)
    map1=hdu1[0].data.astype(np.int32)
    map2=hdu2[0].data.astype(np.int32)
    hdu1[0].data = (map1 | map2).astype(np.float32)
    hdu1.writeto(outfile,overwrite=True)