utils.h

/*
 *  Copyright (C) 2011 Universidad Simon Bolivar
 * 
 *  Permission is hereby granted to distribute this software for
 *  non-commercial research purposes, provided that this copyright
 *  notice is included with any such distribution.
 *  
 *  THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
 *  EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *  PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
 *  SOFTWARE IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
 *  ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 *  
 *  Blai Bonet, bonet@ldc.usb.ve
 *
 */

#ifndef UTILS_H
#define UTILS_H

#include <cassert>
#include <iostream>
#include <sys/resource.h>
#include <sys/time.h>

//#define DEBUG

namespace Utils {

inline float read_time_in_seconds() {
    struct rusage r_usage;
    getrusage(RUSAGE_SELF, &r_usage);
    return (float)r_usage.ru_utime.tv_sec +
           (float)r_usage.ru_utime.tv_usec / (float)1000000;
}

template<typename T> inline T abs(const T a) {
    return a < 0 ? -a : a;
}

} // end of namespace

#undef DEBUG

#endif