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