example.cc

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2004
 *
 *  Last modified:
 *     $Date: 2008-07-11 10:45:19 +0200 (Fri, 11 Jul 2008) $ by $Author: tack $
 *     $Revision: 7344 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *
 *  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 copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  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,
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 */

#include "examples/support.hh"

double
am(double t[], int n) {
  if (n < 1)
    return 0.0;
  double s = 0;
  for (int i=n; i--; )
    s += t[i];
  return s / n;
}

double
dev(double t[], int n) {
  if (n < 2)
    return 0.0;
  double m = am(t,n);
  double s = 0.0;
  for (int i=n; i--; ) {
    double d = t[i]-m;
    s += d*d;
  }
  return sqrt(s / (n-1)) / m;
}

// STATISTICS: example-any