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m_std.F90
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m_std.F90
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!! ----------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Definition of standard constants, in/out io numbers, precision constants
!<
!! --
module m_std
!! -- Declarations
implicit none
private
!! -- Precision Constant
integer, parameter, public :: DP = selected_real_kind(13) !< Double Precision
integer, parameter, public :: SP = selected_real_kind(5) !< Single Precision
integer, parameter, public :: PN = SP !< Default Precision Number
!! -- In/Out
integer, parameter, public :: STDERR = 0 !< Standard Error
integer, parameter, public :: STDOUT = 6 !< Standard Output
integer, parameter, public :: STDIN = 5 !< Standard Input
!! -- Physics/Math Constants under PN precision
real(PN), parameter, public :: PI = 3.141592653589793238462643383_PN
real(PN), parameter, public :: R_EARTH = 6371.0_PN
complex(PN), parameter, public :: EI = (0.0_PN,1.0_PN)
!! -- Precision-specific constant numbers
real(DP), parameter, public :: PI_D = 3.141592653589793238462643383_DP
real(DP), parameter, public :: R_EARTH_D = 6371.0_DP
real(SP), parameter, public :: PI_S = 3.141592653589793238462643383
real(SP), parameter, public :: R_EARTH_S = 6371.0
!! -- Public Subroutines
public :: std__getio
public :: std__genfname
public :: std__countline
public :: std__deg2rad
public :: std__rad2deg
interface std__deg2rad
module procedure d2r_s, d2r_d
end interface
interface std__rad2deg
module procedure r2d_s, r2d_d
end interface
!! -- Private variables
integer, parameter, private :: io0 = 10 !< initial number for file I/O
integer, parameter, private :: IOBIG0 = 900 !< Binary data with io >= IOBIG0 are assumed in BIG_ENDIAN data
!----
!! --------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Return the unusedd unit number measured from io0 constant
!!
!! @par Example
!! - call std__getio( io )
!! - call std__getio( io, .true. ) !< Big-endian output
!! - call std__getio( io, 300 ) !< search io number from 300
!!
!<
!--
interface std__getio
module procedure getio_0, & !< default/number specific
getio_big !< big_endian
end interface
!! --------------------------------------------------------------------------------------------------------------------------- !!
contains
!! --------------------------------------------------------------------------------------------------------------------------- !!
function d2r_d ( deg )
real(DP) :: d2r_d
real(DP), intent(in) :: deg
d2r_d = PI_D / 180.0_DP * deg
end function d2r_d
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
function d2r_s ( deg )
real(SP) :: d2r_s
real(SP), intent(in) :: deg
d2r_s = PI_S / 180.0_SP * deg
end function d2r_s
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
function r2d_d( rad )
real(DP) :: r2d_d
real(DP), intent(in) :: rad
r2d_d = 180.0_DP / PI_D * rad
end function r2d_d
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
function r2d_s( rad )
real(SP) :: r2d_s
real(SP), intent(in) :: rad
r2d_s = 180.0_SP / PI_S * rad
end function r2d_s
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Generate filename "base.????.ext" which isn't exit in current directory.
!!
!! @par Example
!! call std__genfname( 'foo','dat', fname )
!! call std__getio( fp )
!! open ( fp, file=fname ) ! fname = 'foo.0000.dat' if there's no file
!<
!! --
subroutine std__genfname( base, ext, fname )
!! -- Arguments
character(len=*), intent(in) :: base ! base filnemae
character(len=*), intent(in) :: ext ! extention
character(len=*), intent(out) :: fname ! output
integer :: i
character(4) :: ci
logical :: isExist
!! ----
i=0
do
write(ci,'(I4.4)') i
fname = adjustl(trim(base))//'.'//adjustl(trim(ci))&
//'.'//adjustl(trim(ext))
inquire(file=trim(fname), exist=isExist)
if( isExist ) then
i=i+1
else
exit
end if
end do
end subroutine std__genfname
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Count line nubmer n included in the file specified by io
!<
!! --
subroutine std__countline( io, n, comment )
!! -- Arguments
integer, intent(in) :: io
integer, intent(out) :: n
character, intent(in), optional :: comment
integer :: stat
character (256) :: line
!! ----
n = 0
rewind(io)
do
read( io, '(A256)', iostat=stat) line
if( stat /= 0 ) exit
if( present( comment ) ) then
if( line(1:1) == comment ) cycle
end if
if( trim(line) /= '' ) then
n = n + 1
end if
end do
rewind( io )
end subroutine std__countline
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Return the unused unit number measured from pre-defined io0 constant
!! If io00 is given, it seeks the unit number from io00
!<
!! --
subroutine getio_0( io, io00 )
!! -- Arguments
integer, intent(out) :: io !< unit number
integer, intent(in), optional :: io00 !< start number (optional)
!+
logical :: isOpen
!--
if( present( io00 ) ) then
io = io00
else
io = io0
end if
isOpen = .true.
do
inquire( io, opened = isOpen )
if( .not. isOpen ) exit
io = io + 1
end do
end subroutine getio_0
!! --------------------------------------------------------------------------------------------------------------------------- !!
!! --------------------------------------------------------------------------------------------------------------------------- !!
!>
!! Return the unusedd unit number measured from io0 constant
!!
!! If is_big = .true., it searchs io number from IOBIG0. Use it together with appropriate compiler settings
!<
!! --
subroutine getio_big( io, is_big )
!! -- Arguments
integer, intent(out) :: io ! unit number
logical, intent(in) :: is_big ! BIG_ENDIAN
!+
logical :: isOpen
!--
if( is_big) then
io = IOBIG0
else
io = io0
end if
isOpen = .true.
do
inquire( io, opened = isOpen )
if( .not. isOpen ) exit
io = io + 1
end do
end subroutine getio_big
!! --------------------------------------------------------------------------------------------------------------------------- !!
end module m_std
!! ----------------------------------------------------------------------------------------------------------------------------- !!