com.exigen.ie.constrainer.FloatVarSelectorMinSize Maven / Gradle / Ivy
package com.exigen.ie.constrainer;
///////////////////////////////////////////////////////////////////////////////
/*
* Copyright Exigen Group 1998, 1999, 2000
* 320 Amboy Ave., Metuchen, NJ, 08840, USA, www.exigengroup.com
*
* The copyright to the computer program(s) herein
* is the property of Exigen Group, USA. All rights reserved.
* The program(s) may be used and/or copied only with
* the written permission of Exigen Group
* or in accordance with the terms and conditions
* stipulated in the agreement/contract under which
* the program(s) have been supplied.
*/
///////////////////////////////////////////////////////////////////////////////
/**
* An implementation of the FloatVarSelector interface
* that selects the unbound variable with with the smallest domain.
*
* @see FloatVarSelector
* @see FloatVarSelectorFirstUnbound
* @see FloatVarSelectorMinSizeMin
* @see GoalFloatGenerate
*/
public class FloatVarSelectorMinSize implements FloatVarSelector
{
private FloatExpArray _vars;
/**
* Constructor from the FloatExpArray.
*/
public FloatVarSelectorMinSize(FloatExpArray vars)
{
_vars = vars;
}
/**
* Selects the unbound variable with the smallest domain.
* If all variables are bound, returns -1.
*/
public int select()
{
double min = Double.POSITIVE_INFINITY;
int min_var = -1;
int size = _vars.size();
FloatExp[] vars = _vars.data();
for(int i=0; i < size; ++i)
{
FloatExp vari = vars[i];
double mini = vari.size();
if (!vari.bound())
{
if (min > mini || min_var == -1 )
{
min = mini;
min_var = i;
}
}
}
return min_var;
}
} // ~FloatVarSelectorMinSize