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).