MAP_POWER

      MAP_POWER[2]     Integer

    Maximum  exponent  of  3  and  5  allowed  in  automatic  guess of MAP_SIZE.
    MAP_SIZE is decomposed in 2^k 3^p 5^q, and p and q must be less or equal  to
    MAP_POWER.

    Default  is 0: MAP_SIZE is just a power of 2. A value of 1 allows approxima-
    tion of any map size to 20 %, while a value of 2 allows 10 %  approximation.
    Fast  Fourier Transform are slightly slower with powers of 3 and 5, but lim-
    iting the map size can gain a lot in the Cleaning process (which  can  scale
    as MAP_SIZE^4).