Hi,

You have to build the hdf5 library so that the default integer is *8 (for example, use the compiler flag -i8 for the Intel compiler, other compilers have similar flags). If you've built the hdf5 library with F2003 features enabled (--enable-fortran --enable-fortran2003) then you can take a look at rwdset_fortran2003.f90 in the hdf5 source (fortran/examples directory) for using F2003 to write the data.

Scot


On 2012-05-15 08:13, Thomas Unfer wrote:
Hi,

I am a relatively new user of hdf5. I am unsuccessfully trying to
write integer*8 data to an hdf5 file

Here is part of my code :

              integer, allocatable          ::   code(:)
              integer*8, allocatable        ::   delay(:)

        ……

              call h5screate_simple_f(1,dset_dims,dspace_id,error)
              call

h5dcreate_f(sub_group_id,"Code",H5T_NATIVE_INTEGER,dspace_id,dset_id,error)
              call
h5dwrite_f(dset_id,H5T_NATIVE_INTEGER,code,dset_dims,error)
              call h5dclose_f(dset_id,error)
              call h5sclose_f(dspace_id,error)
              call h5screate_simple_f(1,dset_dims,dspace_id,error)
              call

h5dcreate_f(sub_group_id,"Delay",H5T_STD_U16BE,dspace_id,dset_id,error)
call h5dwrite_f(dset_id,H5T_STD_U16BE,delay,dset_dims,error)
              call h5dclose_f(dset_id,error)
              call h5sclose_f(dspace_id,error)

And the compilation fails with the following error using gfortran :

        call h5dwrite_f(dset_id,H5T_STD_U16BE,delay,dset_dims,error)
1 Error: There is no specific subroutine for the generic 'h5dwrite_f' at (1)

I works fine with the native types, but I can't make it run with
integer*8, is there a workaround?

Thanks,

Thomas
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