Linux Certif

Toute la documentation sur la certification Linux LPI

PGADuplicate

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!);