180 lines
8.6 KiB
Fortran
180 lines
8.6 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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! $Id$
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!--------------------------------------------------------------------------------------------------
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!> @author Franz Roters, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Philip Eisenlohr, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Christoph Kords, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH
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!> @brief setting precision for real and int type depending on makros "FLOAT" and "INT"
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!> @details setting precision for real and int type and for DAMASK_NaN. Definition is made
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!! depending on makros "FLOAT" and "INT" defined during compilation
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!! for details on NaN see https://software.intel.com/en-us/forums/topic/294680
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!--------------------------------------------------------------------------------------------------
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module prec
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#ifndef __GFORTRAN__
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use, intrinsic :: & ! unfortunately not in commonly used gfortran versions
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IEEE_arithmetic
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#endif
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implicit none
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private
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#if (FLOAT==4)
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#if defined(Spectral) || defined(FEM)
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SPECTRAL SOLVER AND OWN FEM DO NOT SUPPORT SINGLE PRECISION, STOPPING COMPILATION
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#endif
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integer, parameter, public :: pReal = 4 !< floating point single precition (was selected_real_kind(6,37), number with 6 significant digits, up to 1e+-37)
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#ifndef __GFORTRAN__
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real(pReal), parameter, public :: DAMASK_NaN = IEEE_value(IEEE_quiet_NaN) !< quiet NaN
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#else
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real(pReal), parameter, public :: DAMASK_NaN = real(Z'7F800001', pReal) !< quiet NaN for single precision (from http://www.hpc.unimelb.edu.au/doc/f90lrm/dfum_035.html, copy can be found in documentation/Code/Fortran)
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#endif
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#elif (FLOAT==8)
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integer, parameter, public :: pReal = 8 !< floating point double precision (was selected_real_kind(15,300), number with 15 significant digits, up to 1e+-300)
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#ifndef __GFORTRAN__
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real(pReal), parameter, public :: DAMASK_NaN = IEEE_value(IEEE_quiet_NaN) !< quiet NaN
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#else
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real(pReal), parameter, public :: DAMASK_NaN = real(Z'7FF8000000000000',pReal) !< quiet NaN for double precision (from http://www.hpc.unimelb.edu.au/doc/f90lrm/dfum_035.html, copy can be found in documentation/Code/Fortran)
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#endif
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#else
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NO SUITABLE PRECISION FOR REAL SELECTED, STOPPING COMPILATION
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#endif
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#if (INT==4)
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integer, parameter, public :: pInt = 4 !< integer representation 32 bit (was selected_int_kind(9), number with at least up to +- 1e9)
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#elif (INT==8)
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integer, parameter, public :: pInt = 8 !< integer representation 64 bit (was selected_int_kind(12), number with at least up to +- 1e12)
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#else
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NO SUITABLE PRECISION FOR INTEGER SELECTED, STOPPING COMPILATION
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#endif
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integer, parameter, public :: pLongInt = 8 !< integer representation 64 bit (was selected_int_kind(12), number with at least up to +- 1e12)
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real(pReal), parameter, public :: tol_math_check = 1.0e-8_pReal !< tolerance for internal math self-checks (rotation)
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type, public :: p_vec !< variable length datatype used for storage of state
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real(pReal), dimension(:), allocatable :: p
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end type p_vec
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type, public :: p_intvec
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integer(pInt), dimension(:), allocatable :: p
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end type p_intvec
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!http://stackoverflow.com/questions/3948210/can-i-have-a-pointer-to-an-item-in-an-allocatable-array
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type, public :: tState
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integer(pInt) :: &
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sizeState = 0_pInt , & !< size of state
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sizeDotState = 0_pInt, & !< size of dot state, i.e. parts of the state that are integrated
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sizePostResults = 0_pInt !< size of output data
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logical :: &
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nonlocal = .false. !< absolute tolerance for state integration
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real(pReal), allocatable, dimension(:) :: &
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atolState
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real(pReal), pointer, dimension(:,:), contiguous :: & ! a pointer is needed here because we might point to state/doState. However, they will never point to something, but are rather allocated and, hence, contiguous
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state, & !< state
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dotState !< state rate
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real(pReal), allocatable, dimension(:,:) :: &
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state0, &
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partionedState0, &
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subState0, &
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state_backup, &
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deltaState, &
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previousDotState, & !< state rate of previous xxxx
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previousDotState2, & !< state rate two xxxx ago
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dotState_backup, & !< backup of state rate
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RK4dotState
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real(pReal), allocatable, dimension(:,:,:) :: &
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RKCK45dotState
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end type
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type, extends(tState), public :: tPlasticState
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integer(pInt) :: &
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nSlip = 0_pInt , &
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nTwin = 0_pInt, &
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nTrans = 0_pInt
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real(pReal), pointer, dimension(:,:), contiguous :: &
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slipRate, & !< slip rate
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accumulatedSlip !< accumulated plastic slip
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end type
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type, public :: tFieldData
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integer(pInt) :: &
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sizeField = 0_pInt , &
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sizePostResults = 0_pInt
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real(pReal), allocatable, dimension(:,:) :: &
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field !< field data
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end type
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#ifdef FEM
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type, public :: tOutputData
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integer(pInt) :: &
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sizeIpCells = 0_pInt , &
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sizeResults = 0_pInt
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real(pReal), allocatable, dimension(:,:) :: &
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output !< output data
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end type
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#endif
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public :: &
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prec_init, &
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prec_isNaN
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contains
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!--------------------------------------------------------------------------------------------------
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!> @brief reporting precision and checking if DAMASK_NaN is set correctly
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!--------------------------------------------------------------------------------------------------
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subroutine prec_init
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use, intrinsic :: &
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iso_fortran_env ! to get compiler_version and compiler_options (at least for gfortran 4.6 at the moment)
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implicit none
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integer(pInt) :: worldrank = 0_pInt
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#ifdef PETSc
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#include <petsc-finclude/petscsys.h>
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PetscErrorCode :: ierr
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#endif
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external :: &
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quit, &
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MPI_Comm_rank, &
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MPI_Abort
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#ifdef PETSc
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call MPI_Comm_rank(PETSC_COMM_WORLD,worldrank,ierr);CHKERRQ(ierr)
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#endif
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mainProcess: if (worldrank == 0) then
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write(6,'(/,a)') ' <<<+- prec init -+>>>'
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write(6,'(a)') ' $Id$'
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#include "compilation_info.f90"
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write(6,'(a,i3)') ' Bytes for pReal: ',pReal
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write(6,'(a,i3)') ' Bytes for pInt: ',pInt
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write(6,'(a,i3)') ' Bytes for pLongInt: ',pLongInt
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write(6,'(a,e10.3)') ' NaN: ', DAMASK_NaN
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write(6,'(a,l3)') ' NaN != NaN: ',DAMASK_NaN /= DAMASK_NaN
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write(6,'(a,l3,/)') ' NaN check passed ',prec_isNAN(DAMASK_NaN)
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endif mainProcess
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if ((.not. prec_isNaN(DAMASK_NaN)) .or. (DAMASK_NaN == DAMASK_NaN)) call quit(9000)
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end subroutine prec_init
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!--------------------------------------------------------------------------------------------------
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!> @brief figures out if a floating point number is NaN
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! basically just a small wrapper, because gfortran < 4.9 does not have the IEEE module
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!--------------------------------------------------------------------------------------------------
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logical elemental function prec_isNaN(a)
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implicit none
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real(pReal), intent(in) :: a
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#ifndef __GFORTRAN__
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prec_isNaN = IEEE_is_NaN(a)
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#else
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prec_isNaN = isNaN(a)
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#endif
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end function prec_isNaN
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end module prec
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