EXTERN INDIVIDUAL opop[2*MAXPOP], npop[2*MAXPOP];EXTERN IPTR op, np;EXTERN double SUMfitness, max, avg, min, bigmax, scaled_sumfitness;EXTERN double scale_constA, scale_constB, smax, smin, Cmult;EXTERN double  pcross, pmut, randomseed;EXTERN int xType;EXTERN int popsize, gen, lchrom, ncross, nmut;EXTERN int rank[2*MAXPOP];EXTERN int maxi, mini, biggen, bigind;EXTERN int nvars, maxgen;EXTERN char fname[30];EXTERN char ph_name[30];EXTERN char Ifile[30];EXTERN double Maxconst;EXTERN int (*seltor[NBFUNC])(IPTR, double, int);EXTERN int (*generation[NBFUNC])(IPTR, IPTR, int);EXTERN int selector, seller;