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dft_tools/triqs/h5/scalar.hpp
Olivier Parcollet f2c7d449cc First commit : triqs libs version 1.0 alpha1
for earlier commits, see TRIQS0.x repository.
2013-07-17 19:24:07 +02:00

57 lines
2.0 KiB
C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2011-2013 by O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS 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 General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#ifndef TRIQS_H5_SCALAR_H
#define TRIQS_H5_SCALAR_H
#include "./group.hpp"
namespace triqs { namespace h5 {
template <typename S>
typename std::enable_if<std::is_arithmetic<S>::value>::type
h5_write (group g, std::string const & name, S const & A) {
try {
g.unlink_key_if_exists(name);
H5::DataSet ds = g.create_dataset( name, data_type_file<S>(), H5::DataSpace() );
ds.write( (void *)(&A), data_type_memory<S>(), H5::DataSpace() );
}
TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
}
template <typename S>
typename std::enable_if<std::is_arithmetic<S>::value>::type
h5_read (group g, std::string const & name, S & A) {
try {
H5::DataSet ds = g.open_dataset(name);
H5::DataSpace dataspace = ds.getSpace();
int rank = dataspace.getSimpleExtentNdims();
if (rank != 0) TRIQS_RUNTIME_ERROR << "triqs::array::h5::read. Rank mismatch : expecting a scalar (rank =0)"
<<" while the array stored in the hdf5 file has rank = "<<rank;
ds.read( (void *)(&A), data_type_memory<S>(), H5::DataSpace() , H5::DataSpace() );
}
TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
}
// the complex number is missing here...
}}
#endif