/Users/jamian/Desktop/gecode-2.0.1/contribs/qecode/NaiveValueHeuristics.cc

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/*********************************************************[naivevalueheuristics.cc]
Copyright (c) 2007, Universite d'Orleans - Jeremie Vautard, Marco Benedetti,
Arnaud Lallouet.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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*****************************************************************************/


#include "NaiveValueHeuristics.hh"

int** SmallestValueFirst::subSet(Implicative* home,int var,int* nbRanges) {
    switch (home->type_of_v[var]) {
        case VTYPE_INT : {
            int zeValue = getIntVar(home,whichSpaceOwns(home,var),var)->min();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
        case VTYPE_BOOL : {
            int zeValue = getBoolVar(home,whichSpaceOwns(home,var),var)->min();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;    
    }
    return 0;
}


int** LargestValueFirst::subSet(Implicative* home,int var,int* nbRanges) {
    switch (home->type_of_v[var]) {
        case VTYPE_INT : {
            int zeValue = getIntVar(home,whichSpaceOwns(home,var),var)->max();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
        case VTYPE_BOOL : {
            int zeValue = getBoolVar(home,whichSpaceOwns(home,var),var)->max();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
    }
    return 0;
}

int** MedianValueFirst::subSet(Implicative* home,int var,int* nbRanges) {
    switch (home->type_of_v[var]) {
        case VTYPE_INT : {
            int zeValue = getIntVar(home,whichSpaceOwns(home,var),var)->med();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
        case VTYPE_BOOL : {
            int zeValue = getBoolVar(home,whichSpaceOwns(home,var),var)->med();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
    }
    return 0;
}

int** SmallestHalfFirst::subSet(Implicative* home,int var,int* nbRanges) {
    switch (home->type_of_v[var]) {
        case VTYPE_INT : {
            int zeMin = getIntVar(home,whichSpaceOwns(home,var),var)->min();
            int zeMax = getIntVar(home,whichSpaceOwns(home,var),var)->med();
            int varMax = getIntVar(home,whichSpaceOwns(home,var),var)->max();
            if (zeMax == varMax) zeMax--;
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeMin;
            ret[1][0]=zeMax;
            return ret;
        }
            break;
        case VTYPE_BOOL : {
            int zeValue = getBoolVar(home,whichSpaceOwns(home,var),var)->min();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
    }
    return 0;
}

int** LargestHalfFirst::subSet(Implicative* home,int var,int* nbRanges) {
    switch (home->type_of_v[var]) {
        case VTYPE_INT : {
            int zeMin = getIntVar(home,whichSpaceOwns(home,var),var)->med();
            int zeMax = getIntVar(home,whichSpaceOwns(home,var),var)->max();
            int varMin = getIntVar(home,whichSpaceOwns(home,var),var)->min();
            if (zeMin == varMin) zeMin++;
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeMin;
            ret[1][0]=zeMax;
            return ret;
        }
            break;
        case VTYPE_BOOL : {
            int zeValue = getBoolVar(home,whichSpaceOwns(home,var),var)->max();
            *nbRanges = 1;
            int** ret = new int*[2];
            ret[0]=new int[1];
            ret[1]=new int[1];
            ret[0][0]=zeValue;
            ret[1][0]=zeValue;
            return ret;
        }
            break;
    }
    return 0;
}

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