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/*
open source routing machine
Copyright (C) Dennis Luxen, others 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU AFFERO General Public License as published by
the Free Software Foundation; either version 3 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
or see http://www.gnu.org/licenses/agpl.txt.
*/
#ifndef TIMEUTIL_H_
#define TIMEUTIL_H_
#include <climits>
#include <cmath>
#include <cstdlib>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifdef _WIN32
#include <sys/timeb.h>
#include <sys/types.h>
#include <winsock.h>
void gettimeofday(struct timeval* t,void* timezone)
{ struct _timeb timebuffer;
_ftime( &timebuffer );
t->tv_sec=timebuffer.time;
t->tv_usec=1000*timebuffer.millitm;
}
#else
#include <sys/time.h>
#endif
#ifdef _WIN32
#include <boost/functional/hash.hpp>
#else
#include <tr1/functional_hash.h>
#endif
#include <boost/thread.hpp>
/** Returns a timestamp (now) in seconds (incl. a fractional part). */
static inline double get_timestamp() {
struct timeval tp;
gettimeofday(&tp, NULL);
return double(tp.tv_sec) + tp.tv_usec / 1000000.;
}
static inline double y2lat(double a) { return 180/M_PI * (2 * atan(exp(a*M_PI/180)) - M_PI/2); }
static inline double lat2y(double a) { return 180/M_PI * log(tan(M_PI/4+a*(M_PI/180)/2)); }
static inline unsigned boost_thread_id_hash(boost::thread::id const& id) {
std::stringstream ostr;
ostr << id;
std::tr1::hash<std::string> h;
return h(ostr.str());
}
#endif /* TIMEUTIL_H_ */
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