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dft_tools/test/triqs/arrays/hdf5.cpp
Olivier Parcollet 4af1afbdaf hdf5 : clean up
- For users : only change is :
   H5::H5File in apps. to be replaced by triqs::h5::file, same API.

- using only the C API because :
   - it is cleaner, better documented, more examples.
   - it is the native hdf5 interface.
   - simplify the installation e.g. on mac. Indeed, hdf5 is
     usually installed without C++ interface, which is optional.
     E.g. EPD et al., brew by default.
     Also the infamous mpi+ hdf5_cpp bug, for which we have no clean solution.

- clean the notion of parent of a group. Not needed, better iterate function in C LT API.
- modified doc : no need for C++ bindings any more.
- modified cmake to avoid requiring CPP bindings.
2014-06-22 13:57:47 +02:00

110 lines
2.9 KiB
C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2011 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/>.
*
******************************************************************************/
#include "./common.hpp"
#include <triqs/arrays/array.hpp>
#include <iostream>
#include <triqs/arrays/h5/simple_read_write.hpp>
using std::cout; using std::endl;
namespace tqa = triqs::arrays;
namespace h5 = triqs::h5;
using tqa::range;
template <typename T>
std::ostream & operator << (std::ostream & out, std::vector<T> const & v) {
for (size_t i =0; i<v.size(); ++i) out<< v[i];
return out;
}
int main(int argc, char **argv) {
try {
tqa::array<long,2> A (2,3),B,vc;
tqa::array<double,2> D (2,3), D2;
tqa::array<long,2> Af(FORTRAN_LAYOUT),Bf(FORTRAN_LAYOUT),vf(FORTRAN_LAYOUT);
tqa::array<std::complex<double>,1> C(5), C2;
std::complex<double> z(1,2);
for (int i =0; i<5; ++i) {
C(i) = std::complex<double>(i,i);
}
for (int i =0; i<2; ++i)
for (int j=0; j<3; ++j)
{
A(i,j) = 10*i+ j;
D (i,j) = A(i,j) / 10.0;
}
Af = A;
std::cout<<" A= "<<A<<std::endl;
std::cout<<" D= "<<D<<std::endl;
std::cout<<" C= "<<C<<std::endl;
std::cout<<" Arange(0,1),range(1,3) = "<< A(range(),range(1,3))<<std::endl;
h5::file file( "ess.h5", H5F_ACC_TRUNC );
h5::group top(file);
h5_write(top,"A",A);
h5_write(top,"Af",Af);
h5_write(top,"C",C);
h5_write(top,"D",D);
h5_write(top,"S","");
// testing scalar
double x=2.3;
h5_write(top, "x",x);
h5_write(top, "s", std::string("a nice chain"));
top.create_group("G");
h5_write(top,"G/A",A);
auto G = top.open_group("G");
h5_write(G, "A2",A);
h5_read (top, "A",B); std::cout<< "B = "<< B<<std::endl;
h5_read (top, "Af",Bf); std::cout<< "Bf = "<< Bf<<std::endl;
h5_read (top, "D",D2); std::cout<< "D = "<< D2<<std::endl;
h5_read (top, "C",C2); std::cout<< "C = "<< C2<<std::endl;
double xx =0; h5_read(top, "x",xx); TEST(xx);
std::string s2 ("----------------------------------");
h5_read(top, "s", s2);
TEST(s2);
//tqa::array<long,1> E; h5_read (top, "A",E); std::cout<< "E = "<< E<<std::endl;
}
catch(std::exception const& err) { std::cout<<err.what()<<std::endl;}
catch( const char * err) { std::cout<<err<<std::endl;}
return 0;
}