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116 lines
4.1 KiB
Fortran
116 lines
4.1 KiB
Fortran
! This is the F2003 version of the h5_compound.c example source code.
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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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! Copyright by the Board of Trustees of the University of Illinois. *
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! All rights reserved. *
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! *
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! This file is part of HDF5. The full HDF5 copyright notice, including *
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! terms governing use, modification, and redistribution, is contained in *
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! the COPYING file, which can be found at the root of the source code *
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! distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
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! If you do not have access to either file, you may request a copy from *
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! help@hdfgroup.org. *
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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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!
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! This example shows how to create an array of a compound datatype which
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! contains an array of type complex and how to write it to hdf5
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! and how to read it back into a compound datatype for hdf5.
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!
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PROGRAM compound_complex_fortran2003
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USE hdf5
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USE ISO_C_BINDING
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IMPLICIT NONE
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INTEGER, PARAMETER :: r_k8 = KIND(0.0d0)
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INTEGER, PARAMETER :: NMAX = 3
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TYPE sample
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COMPLEX(KIND=r_k8), DIMENSION(1:NMAX) :: nlev
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REAL(KIND=r_k8) :: N
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END TYPE sample
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INTEGER(HID_T) :: sample_type_id, dset_id, dspace_id, file_id
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INTEGER(HSIZE_T) :: dims(1) = (/NMAX/)
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INTEGER :: error
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TYPE(sample), DIMENSION(1:NMAX), TARGET :: samples, read_samples
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INTEGER :: i
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TYPE(C_PTR) :: f_ptr
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INTEGER(HSIZE_T), DIMENSION(1) :: array_dims=(/2*NMAX/) ! complex is really (real,real) so double size of array
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INTEGER(hid_t) :: array_type_id ! Nested Array Datatype ID
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! Initialize data
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DO i=1,NMAX
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samples(i)%nlev(1:NMAX) = (3.14159_r_k8, 2.71828_r_k8)
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samples(i)%N = i
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END DO
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! Initialize FORTRAN interface.
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CALL h5open_f(error)
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! Create a new file using default properties.
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CALL h5fcreate_f("test.h5", H5F_ACC_TRUNC_F, file_id, error)
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!
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! Create the memory data type.
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!
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CALL H5Tcreate_f(H5T_COMPOUND_F, H5OFFSETOF(C_LOC(samples(1)), C_LOC(samples(2))), sample_type_id, error)
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! Create the array type
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CALL h5Tarray_create_f(H5T_NATIVE_DOUBLE, 1, array_dims, array_type_id, error)
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! Then use that array type to insert values into
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CALL H5Tinsert_f( sample_type_id, "nlev", &
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H5OFFSETOF(C_LOC(samples(1)),C_LOC(samples(1)%nlev(1))), array_type_id, error)
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CALL H5Tinsert_f( sample_type_id, "N", &
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H5OFFSETOF(C_LOC(samples(1)),C_LOC(samples(1)%N)), h5kind_to_type(r_k8,H5_REAL_KIND), error)
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!
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! Create dataspace
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!
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CALL h5screate_simple_f(1, dims, dspace_id, error)
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!
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! Create the dataset.
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!
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CALL H5Dcreate_f(file_id, "samples", sample_type_id, dspace_id, dset_id, error)
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!
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! Write data to the dataset
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!
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f_ptr = C_LOC(samples(1))
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CALL H5Dwrite_f(dset_id, sample_type_id, f_ptr, error)
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! Close up
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CALL h5dclose_f(dset_id, error)
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CALL h5sclose_f(dspace_id, error)
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CALL h5fclose_f(file_id, error)
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!
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! Open the file and the dataset.
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!
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CALL H5Fopen_f("test.h5", H5F_ACC_RDONLY_F, file_id, error)
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CALL H5Dopen_f(file_id, "samples", dset_id, error)
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!
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! Create the memory data type.
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!
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CALL H5Tcreate_f(H5T_COMPOUND_F,H5OFFSETOF(C_LOC(samples(1)), C_LOC(samples(2))), sample_type_id,error)
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CALL H5Tinsert_f( sample_type_id, "nlev", &
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H5OFFSETOF(C_LOC(samples(1)),C_LOC(samples(1)%nlev(1))), array_type_id, error)
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CALL H5Tinsert_f( sample_type_id, "N", &
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H5OFFSETOF(C_LOC(samples(1)),C_LOC(samples(1)%N)), h5kind_to_type(r_k8,H5_REAL_KIND), error)
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f_ptr = C_LOC(read_samples(1))
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CALL H5Dread_f(dset_id, sample_type_id, f_ptr, error)
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!
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! Display the fields
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!
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DO i=1,NMAX
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WRITE(*,'(A,3(" (",F8.5,",",F8.5,")"))') "SAMPLES =",read_samples(i)%nlev(1:NMAX)
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WRITE(*,'(A,F8.5)') "N =", read_samples(i)%N
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END DO
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CALL H5Tclose_f(sample_type_id, error)
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CALL H5Dclose_f(dset_id, error)
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CALL H5Fclose_f(file_id, error)
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END PROGRAM compound_complex_fortran2003
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