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* Merge examples repo into library * Change grepTest to be more fault-tolerant * Update examples macro file * Exclude all Fortran examples from doxygen
136 lines
4.1 KiB
Fortran
136 lines
4.1 KiB
Fortran
! ************************************************************
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!
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! This example shows how to read and write real and integer
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! data where the precision is set by SELECTED_REAL_KIND and
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! SELECTED_INT_KIND.
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!
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! The program first writes integers
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! and reals to a dataset with dataspace dimensions of DIM0xDIM1,
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! then closes the file. Next, it reopens the file, reads back
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! the data, and outputs it to the screen.
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!
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! This file is intended for use with HDF5 Library version 1.8
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! with --enable-fortran2003
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!
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! ************************************************************
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PROGRAM main
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USE HDF5
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USE ISO_C_BINDING
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IMPLICIT NONE
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! Set the precision for the real KINDs
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INTEGER, PARAMETER :: sp = KIND(1.0), &
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dp = SELECTED_REAL_KIND(2*PRECISION(1.0_sp)), &
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qp = SELECTED_REAL_KIND(2*PRECISION(1.0_dp))
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! -10 10
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! Find the INTEGER KIND that can represent values from 10 to 10
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!
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INTEGER, PARAMETER :: ip = SELECTED_INT_KIND(10)
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!
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CHARACTER(LEN=23), PARAMETER :: filename = "h5ex_d_rdwr_kind.h5"
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CHARACTER(LEN=4) , PARAMETER :: dataset_r = "DS_R"
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CHARACTER(LEN=4) , PARAMETER :: dataset_i = "DS_I"
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INTEGER , PARAMETER :: dim0 = 4
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INTEGER , PARAMETER :: dim1 = 7
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INTEGER :: hdferr
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INTEGER(HID_T) :: file, space, dset_r, dset_i ! Handles
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INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/) ! Size read/write buffer
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INTEGER(KIND=ip), DIMENSION(1:dim0,1:dim1), TARGET :: wdata_i, rdata_i ! Write/Read buffers
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REAL(kIND=dp), DIMENSION(1:dim0,1:dim1), TARGET :: wdata_r, rdata_r ! Write/Read buffers
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INTEGER :: i, j
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TYPE(C_PTR) :: f_ptr
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INTEGER(HID_T) :: h5_kind_type_r, h5_kind_type_i ! HDF type corresponding to the specified KIND
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!
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! Initialize FORTRAN interface.
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!
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CALL h5open_f(hdferr)
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!
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! Initialize data.
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!
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DO i = 1, dim0
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DO j = 1, dim1
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wdata_i(i,j) = (i-1)*(j-1)-(j-1)
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wdata_r(i,j) = REAL(wdata_i(i,j),KIND=dp)
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ENDDO
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ENDDO
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!
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! Find the HDF type corresponding to the specified KIND
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!
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h5_kind_type_r = h5kind_to_type(dp,H5_REAL_KIND)
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h5_kind_type_i = h5kind_to_type(ip,H5_INTEGER_KIND)
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!
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! Create a new file using the default properties.
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!
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CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr)
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!
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! Create dataspace. Setting size to be the current size.
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!
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CALL h5screate_simple_f(2, dims, space, hdferr)
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!
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! Create the dataset.
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!
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CALL h5dcreate_f(file, dataset_i, h5_kind_type_i, space, dset_i, hdferr)
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CALL h5dcreate_f(file, dataset_r, h5_kind_type_r, space, dset_r, hdferr)
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!
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! Write the data to the dataset.
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!
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f_ptr = C_LOC(wdata_i(1,1))
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CALL h5dwrite_f(dset_i, h5_kind_type_i, f_ptr, hdferr)
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f_ptr = C_LOC(wdata_r(1,1))
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CALL h5dwrite_f(dset_r, h5_kind_type_r, f_ptr, hdferr)
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!
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! Close and release resources.
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!
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CALL h5dclose_f(dset_r, hdferr)
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CALL h5dclose_f(dset_i, hdferr)
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CALL h5sclose_f(space, hdferr)
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CALL h5fclose_f(file , hdferr)
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!
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! Now we begin the read section of this example.
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!
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!
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! Open file and dataset using the default properties.
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!
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CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr)
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CALL h5dopen_f(file, dataset_i, dset_i, hdferr)
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CALL h5dopen_f(file, dataset_r, dset_r, hdferr)
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!
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! Read the data using the default properties.
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!
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f_ptr = C_LOC(rdata_i(1,1))
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CALL h5dread_f(dset_i, h5_kind_type_i, f_ptr, hdferr)
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f_ptr = C_LOC(rdata_r(1,1))
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CALL h5dread_f(dset_r, h5_kind_type_r, f_ptr, hdferr)
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!
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! Output the data to the screen.
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!
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WRITE(*, '(/,A,":")') dataset_i
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DO i=1, dim0
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WRITE(*,'(" [")', ADVANCE='NO')
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WRITE(*,'(80i3)', ADVANCE='NO') rdata_i(i,:)
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WRITE(*,'(" ]")')
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ENDDO
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WRITE(*, '(/,A,":")') dataset_r
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DO i=1, dim0
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WRITE(*,'(" [")', ADVANCE='NO')
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WRITE(*,'(80f7.3)', ADVANCE='NO') rdata_r(i,:)
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WRITE(*,'(" ]")')
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ENDDO
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WRITE(*, '(/)')
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!
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! Close and release resources.
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!
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CALL h5dclose_f(dset_i , hdferr)
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CALL h5dclose_f(dset_r , hdferr)
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CALL h5fclose_f(file , hdferr)
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END PROGRAM main
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