//Stimation (Using Heap's law) of the number of different "meaningful" words.
//sizeNValue=N_value;
if(bytesFile<5000000) bytesFile = 5000000;
-
sizeNValue = (unsigned long) floor(3.9* pow(bytesFile,0.70) );
// Inicializes the arrays used to detect if a char is valid or not.