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 approx-
imation of any map size to 20 %, while a value of 2 allows 10 % approxi-
mation. Fast Fourier Transform are slightly slower with powers of 3 and
5, but limiting the map size can gain a lot in the Cleaning process
(which can scale as MAP_SIZE^4).
Gildas manager
2023-06-01