55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
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/*
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* This file is part of libc_utils.
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*
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* libc_utils is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libc_utils 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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*
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* You should have received a copy of the GNU General Public License
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* along with libc_utils; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* libc_utils is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/*! \file walltime_c.h
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* Functionality for reading wall clock time
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*
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* Copyright (C) 2010 Max-Planck-Society
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* \author Martin Reinecke
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*/
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#ifndef PLANCK_WALLTIME_C_H
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#define PLANCK_WALLTIME_C_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! Returns an approximation of the current wall time (in seconds).
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The first available of the following timers will be used:
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<ul>
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<li> \a omp_get_wtime(), if OpenMP is available
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<li> \a MPI_Wtime(), if MPI is available
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<li> \a gettimeofday() otherwise
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</ul>
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\note Only useful for measuring time differences.
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\note This function has an execution time between 10 and 100 nanoseconds. */
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double wallTime(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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