NAME

       PGADuplicate  -  determines  if  a  specified  string  is a duplicate of one already in an
       existing population

INPUT PARAMETERS

       ctx    - context variable
       p      - string index
       pop1   - symbolic constant of the population containing string p
       pop2   - symbolic constant of the (possibly  partial)  population  containing  strings  to
              compare string p against
       n      - the number of strings in pop2 to compare string p against
       n      -1)

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       int  PGADuplicate(ctx, p, pop1, pop2, n)
       PGAContext *ctx
       int p
       int pop1
       int pop2
       int n

LOCATION

       duplcate.c

EXAMPLE

       0,...,n-1 in population pop2.  Otherwise returns PGA_FALSE

       Example:
       Change any string in PGA_NEWPOP that is an exact copy of a string
       in PGA_OLDPOP.

       PGAContext *ctx;
       int b, n;
       :
       n  = PGAGetPopsize(ctx);
       for (b=0; b<n; b++)
       if (PGADuplicate(ctx, b, PGA_NEWPOP, PGA_OLDPOP, n))
       PGAChange(ctx, b, PGA_NEWPOP);

       Check if the best string in population PGA_OLDPOP is a duplicate of any
       of the strings in the first half of population PGA_NEWPOP.

       PGAContext *ctx;
       int b, n;
       :
       b  = PGAGetBestIndex(ctx, PGA_OLDPOP);
       n  = PGAGetPopsize(ctx) / 2;
       if (PGADuplicate(ctx, b, PGA_OLDPOP, PGA_NEWPOP, n))
       printf("A duplicate!0);

                                             05/01/95                             PGADuplicate(8)