PGAEvaluate - Online in the Cloud

PROGRAM:

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)

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