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Diffstat (limited to 'fortran/examples/compound_fortran2003.f90')
-rw-r--r-- | fortran/examples/compound_fortran2003.f90 | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/fortran/examples/compound_fortran2003.f90 b/fortran/examples/compound_fortran2003.f90 new file mode 100644 index 0000000..a55d1a6 --- /dev/null +++ b/fortran/examples/compound_fortran2003.f90 @@ -0,0 +1,208 @@ +! This is the F2003 version of the h5_compound.c example source code. +! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * +! Copyright by the Board of Trustees of the University of Illinois. * +! All rights reserved. * +! * +! This file is part of HDF5. The full HDF5 copyright notice, including * +! terms governing use, modification, and redistribution, is contained in * +! the files COPYING and Copyright.html. COPYING can be found at the root * +! of the source code distribution tree; Copyright.html can be found at the * +! root level of an installed copy of the electronic HDF5 document set and * +! is linked from the top-level documents page. It can also be found at * +! http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * +! access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * +! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * +! +! This example shows how to create a compound data type, +! write an array which has the compound data type to the file, +! and read back fields' subsets. +! + +PROGRAM main + USE hdf5 + USE ISO_C_BINDING + IMPLICIT NONE + +! KIND parameters + + INTEGER, PARAMETER :: int_k1 = SELECTED_INT_KIND(1) ! This should map to INTEGER*1 on most modern processors + INTEGER, PARAMETER :: int_k2 = SELECTED_INT_KIND(4) ! This should map to INTEGER*2 on most modern processors + INTEGER, PARAMETER :: int_k4 = SELECTED_INT_KIND(8) ! This should map to INTEGER*4 on most modern processors + INTEGER, PARAMETER :: int_k8 = SELECTED_INT_KIND(16) ! This should map to INTEGER*8 on most modern processors + + INTEGER, PARAMETER :: r_k4 = SELECTED_REAL_KIND(5) ! This should map to REAL*4 on most modern processors + INTEGER, PARAMETER :: r_k8 = SELECTED_REAL_KIND(10) ! This should map to REAL*8 on most modern processors + +! FILES + + CHARACTER(LEN=*), PARAMETER :: H5FILE_NAME = "SDScompound.h5" + CHARACTER(LEN=*), PARAMETER :: DATASETNAME = "ArrayOfStructures" + + INTEGER, PARAMETER :: LENGTH = 10 + INTEGER, PARAMETER :: RANK = 1 + +!---------------------------------------------------------------- +! First derived-type and dataset + TYPE s1_t + CHARACTER(LEN=1), DIMENSION(1:13) :: chr + INTEGER(KIND=int_k1) :: a + REAL(KIND=r_k4) :: b + REAL(KIND=r_k8) :: c + END TYPE s1_t + + TYPE(s1_t), TARGET :: s1(LENGTH) + INTEGER(hid_t) :: s1_tid ! File datatype identifier + +!---------------------------------------------------------------- +! Second derived-type (subset of s1_t) and dataset + TYPE s2_t + CHARACTER(LEN=1), DIMENSION(1:13) :: chr + REAL(KIND=r_k8) :: c + INTEGER(KIND=int_k1) :: a + END TYPE s2_t + + type(s2_t), target :: s2(LENGTH) + integer(hid_t) :: s2_tid ! Memory datatype handle + +!---------------------------------------------------------------- +! Third "derived-type" (will be used to read float field of s1) + INTEGER(hid_t) :: s3_tid ! Memory datatype handle + REAL(KIND=r_k4), TARGET :: s3(LENGTH) + + INTEGER :: i + INTEGER(hid_t) :: file, dataset, space + !type(H5F_fileid_type) :: file + !type(H5D_dsetid_type) :: dataset + !type(H5S_spaceid_type) :: space + INTEGER(hsize_t) :: DIM(1) = (/LENGTH/) ! Dataspace dimensions + INTEGER(SIZE_T) :: type_size ! Size of the datatype + INTEGER(SIZE_T) :: offset, sizeof_compound + INTEGER :: hdferr + TYPE(C_PTR) :: f_ptr + + INTEGER(SIZE_T) :: type_sizei ! Size of the integer datatype + INTEGER(SIZE_T) :: type_sizer ! Size of the real datatype + INTEGER(SIZE_T) :: type_sized ! Size of the double datatype + INTEGER(hid_t) :: tid3 ! /* Nested Array Datatype ID */ + INTEGER(HSIZE_T), DIMENSION(1) :: tdims1=(/13/) + ! + ! Initialize FORTRAN interface. + ! + + CALL h5open_f(hdferr) + + ! + ! Initialize the data + ! + DO i = 0, LENGTH-1 + s1(i+1)%chr(1)(1:1) = 'a' + s1(i+1)%chr(2)(1:1) = 'b' + s1(i+1)%chr(3)(1:1) = 'c' + s1(i+1)%chr(4:12)(1:1) = ' ' + s1(i+1)%chr(13)(1:1) = 'd' + s1(i+1)%a = i + s1(i+1)%b = i*i + s1(i+1)%c = 1./REAL(i+1) + END DO + ! + ! Create the data space. + ! + ! + CALL H5Screate_simple_f(RANK, dim, space, hdferr) + + ! + ! Create the file. + ! + CALL H5Fcreate_f(H5FILE_NAME, H5F_ACC_TRUNC_F, file, hdferr) + + ! + ! Create the memory data type. + ! + CALL H5Tcreate_f(H5T_COMPOUND_F, H5OFFSETOF(C_LOC(s1(1)), C_LOC(s1(2))), s1_tid, hdferr) + + CALL h5tarray_create_f(H5T_NATIVE_CHARACTER, 1, tdims1, tid3, hdferr) + + CALL H5Tinsert_f(s1_tid, "chr_name", H5OFFSETOF(C_LOC(s1(1)),C_LOC(s1(1)%chr)),tid3, hdferr) + CALL H5Tinsert_f(s1_tid, "a_name", H5OFFSETOF(C_LOC(s1(1)),C_LOC(s1(1)%a)), h5kind_to_type(int_k1,H5_INTEGER_KIND), hdferr) + CALL H5Tinsert_f(s1_tid, "c_name", H5OFFSETOF(C_LOC(s1(1)),C_LOC(s1(1)%c)), h5kind_to_type(r_k8,H5_REAL_KIND), hdferr) + CALL H5Tinsert_f(s1_tid, "b_name", H5OFFSETOF(C_LOC(s1(1)),C_LOC(s1(1)%b)), h5kind_to_type(r_k4,H5_REAL_KIND), hdferr) + + ! + ! Create the dataset. + ! + CALL H5Dcreate_f(file, DATASETNAME, s1_tid, space, dataset, hdferr) + + ! + ! Write data to the dataset + ! + + f_ptr = C_LOC(s1(1)) + CALL H5Dwrite_f(dataset, s1_tid, f_ptr, hdferr) + + ! + ! Release resources + ! + CALL H5Tclose_f(s1_tid, hdferr) + CALL H5Sclose_f(space, hdferr) + CALL H5Dclose_f(dataset, hdferr) + CALL H5Fclose_f(file, hdferr) + + ! + ! Open the file and the dataset. + ! + + CALL H5Fopen_f(H5FILE_NAME, H5F_ACC_RDONLY_F, file, hdferr) + + CALL H5Dopen_f(file, DATASETNAME, dataset,hdferr) + + ! + ! Create a data type for s2 + ! + CALL H5Tcreate_f(H5T_COMPOUND_F, H5OFFSETOF(C_LOC(s2(1)), C_LOC(s2(2))), s2_tid, hdferr) + + CALL H5Tinsert_f(s2_tid, "chr_name", H5OFFSETOF(C_LOC(s2(1)),C_LOC(s2(1)%chr)), tid3, hdferr) + CALL H5Tinsert_f(s2_tid, "c_name", H5OFFSETOF(C_LOC(s2(1)),C_LOC(s2(1)%c)), h5kind_to_type(r_k8,H5_REAL_KIND), hdferr) + CALL H5Tinsert_f(s2_tid, "a_name", H5OFFSETOF(C_LOC(s2(1)),C_LOC(s2(1)%a)), h5kind_to_type(int_k1,H5_INTEGER_KIND), hdferr) + + ! + ! Read two fields c and a from s1 dataset. Fields in the file + ! are found by their names "c_name" and "a_name". + s2(:)%c=-1; s2(:)%a=-1; + + + f_ptr = C_LOC(s2(1)) + CALL H5Dread_f(dataset, s2_tid, f_ptr, hdferr) + + ! + ! Display the fields + ! + DO i = 1, length + WRITE(*,'(/,A,/,999(A,1X))') "Field chr :", s2(i)%chr(1:13)(1:1) + ENDDO + WRITE(*,'(/,A,/,999(F8.4,1X))') "Field c :", s2(:)%c + WRITE(*,'(/,A,/,999(I0,1X))') "Field a :", s2(:)%a + ! + ! Create a data type for s3. + ! + CALL H5Tcreate_f(H5T_COMPOUND_F, H5OFFSETOF(C_LOC(s3(1)),C_LOC(s3(2))),s3_tid, hdferr) + + CALL H5Tinsert_f(s3_tid, "b_name", 0_size_t, h5kind_to_type(r_k4,H5_REAL_KIND), hdferr) + ! + ! Read field b from s1 dataset. Field in the file is found by its name. + ! + s3(:)=-1 + f_ptr = C_LOC(s3(1)) + CALL H5Dread_f(dataset, s3_tid, f_ptr, hdferr) + ! + ! Display the field + ! + WRITE(*,'(/,A,/,999(F8.4,1X))') "Field b :",s3(:) + ! + ! Release resources + ! + CALL H5Tclose_f(s2_tid, hdferr) + CALL H5Tclose_f(s3_tid, hdferr) + CALL H5Dclose_f(dataset, hdferr) + CALL H5Fclose_f(file, hdferr) + +END PROGRAM main |