granicus.if.org Git - postgresql/blob - src/backend/optimizer/geqo/geqo_copy.c

   1 /*------------------------------------------------------------------------
   2  *
   3  * geqo_copy.c
   4  *
   5  * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * src/backend/optimizer/geqo/geqo_copy.c
   9  *
  10  *-------------------------------------------------------------------------
  11  */
  12
  13 /* contributed by:
  14    =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
  15    *  Martin Utesch                              * Institute of Automatic Control          *
  16    =                                                     = University of Mining and Technology =
  17    *  utesch@aut.tu-freiberg.de  * Freiberg, Germany                               *
  18    =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
  19  */
  20
  21 /* this is adopted from D. Whitley's Genitor algorithm */
  22
  23 /*************************************************************/
  24 /*                                                                                                                       */
  25 /*      Copyright (c) 1990                                                                               */
  26 /*      Darrell L. Whitley                                                                               */
  27 /*      Computer Science Department                                                              */
  28 /*      Colorado State University                                                                */
  29 /*                                                                                                                       */
  30 /*      Permission is hereby granted to copy all or any part of  */
  31 /*      this program for free distribution.   The author's name  */
  32 /*      and this copyright notice must be included in any copy.  */
  33 /*                                                                                                                       */
  34 /*************************************************************/
  35
  36 #include "postgres.h"
  37 #include "optimizer/geqo_copy.h"
  38
  39 /* geqo_copy
  40  *
  41  *       copies one gene to another
  42  *
  43  */
  44 void
  45 geqo_copy(PlannerInfo *root, Chromosome *chromo1, Chromosome *chromo2,
  46                   int string_length)
  47 {
  48         int                     i;
  49
  50         for (i = 0; i < string_length; i++)
  51                 chromo1->string[i] = chromo2->string[i];
  52
  53         chromo1->worth = chromo2->worth;
  54 }