Didasko  Development
 All Classes Namespaces Files Functions Variables Pages
// @HEADER
// ***********************************************************************
//
// Didasko Tutorial Package
// Copyright (2005) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions about Didasko? Contact Marzio Sala (marzio.sala _AT_ gmail.com)
//
// ***********************************************************************
// @HEADER
#include "Didasko_ConfigDefs.h"
#ifdef HAVE_MPI
#include "mpi.h"
#endif
#if defined(HAVE_DIDASKO_TEUCHOS)
#include "Teuchos_TimeMonitor.hpp"
using namespace Teuchos;
// Global Timers
RCP<Time> CompTime = TimeMonitor::getNewTimer("Computational Time");
RCP<Time> FactTime = TimeMonitor::getNewTimer("Factorial Time");
// Quadratic function declaration.
double quadFunc( double x );
// Factorial function declaration.
double factFunc( int x );
int main(int argc, char* argv[])
{
int i;
double x;
#ifdef HAVE_MPI
MPI_Init(&argc, &argv);
#endif
// Apply the quadratic function.
for( i=-100; i<100; i++ ) {
x = quadFunc( (double) i );
}
// Apply the factorial function.
for( i=0; i<100; i++ ) {
x = factFunc( i );
}
// Get a summary from the time monitor.
TimeMonitor::summarize();
#ifdef HAVE_MPI
MPI_Finalize();
#endif
return 0;
}
/* Evaluate a quadratic function at point x */
double quadFunc( double x )
{
// Construct a local time monitor, this starts the CompTime timer and will stop when leaving scope.
Teuchos::TimeMonitor LocalTimer(*CompTime);
// Evaluate the quadratic function.
return ( x*x - 1.0 );
}
/* Compute the factorial of x */
double factFunc( int x )
{
// Construct a local time monitor, this starts the FactTime timer and will stop when leaving scope.
Teuchos::TimeMonitor LocalTimer(*FactTime);
// Special returns for specific cases.
if( x == 0 ) return 0.0;
if( x == 1 ) return 1.0;
// Evaluate the factorial function.
return ( (double) x * factFunc(x-1) );
}
#else
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char *argv[])
{
#ifdef HAVE_MPI
MPI_Init(&argc,&argv);
#endif
puts("Please configure Didasko with:\n"
"--enable-teuchos");
#ifdef HAVE_MPI
MPI_Finalize();
#endif
return 0;
}
#endif