xenial (1) PGAEvaluate.1.gz

Provided by: pgapack_1.1.1-3_amd64 bug

NAME

       PGAEvaluate - Calls a user-specified function to return an evaluation of each string in the population.

DESCRIPTION

       The  user-specified  function  is  only  called  if  the  string  has been changed (e.g., by crossover or
       mutation) or the user has explicitly signaled the  string's  evaluation  is  out-of-date  by  a  call  to
       PGASetEvaluationUpToDateFlag().

INPUT PARAMETERS

       ctx    - context variable
       pop    - symbolic constant of the population to be evaluated
       f      - a pointer to a function to evaluate a string.  This function will be called once for each string
              in population pop that requires evaluation.  This function must return a  double  (the  evaluation
              function value) and must fit the prototype double f(PGAContext *c, int p, int pop);
       comm   - an MPI communicator

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       void  PGAEvaluate(ctx, pop, , comm)
       PGAContext *ctx
       int pop
       double (*f)(PGAContext *, int, int)
       MPI_Comm comm

LOCATION

       parallel.c

EXAMPLE

       Example:
       Evaluate all strings in population PGA_NEWPOP using the user-defined
       evaluation function Energy.

       double Energy(PGAContext *ctx, int p, int pop) {
       :
       };

       PGAContext *ctx;
       :
       PGAEvaluate(ctx, PGA_NEWPOP, Energy, MPI_COMM_WORLD);

                                                    05/01/95                                      PGAEvaluate(1)