dcdatetimeadd.f90

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!= 利用者定義演算子 (+) のための関数
!= Functions for user defined operation (+)
!
! Authors::   Yasuhiro MORIKAWA, Eizi TOYODA
! Version::   $Id: dcdatetimeadd.f90,v 1.2 2009-05-31 11:46:03 morikawa Exp $
! Tag Name::  $Name:  $
! Copyright:: Copyright (C) GFD Dennou Club, 2000-2005. All rights reserved.
! License::   See COPYRIGHT[link:../../COPYRIGHT]
!
  function dcdatetime_add_ft(diff, time) result(result)
    !
    ! 2 つの日時 (DC_DATETIME 型) もしくは
    ! 日時差 (DC_DIFFTIME 型)の加算を行います.
    !
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_date_generic, only: dcdatetimecreate, eval
    use dc_scaledsec, only: dc_scaled_sec, &
      & operator(<), operator(>), operator(<=), operator(>=), &
      & operator(+), operator(-), operator(*), operator(/), &
      & modulo, int, abs, sign
    implicit none
    type(dc_datetime):: result
    type(dc_difftime), intent(in):: diff
    type(dc_datetime), intent(in):: time
    type(dc_scaled_sec):: time_year, time_mon, time_day, time_sec
    integer:: time_caltype
    character(6):: time_zone
  continue
    call eval(time, sclyear = time_year, sclmon = time_mon, &
      & sclday = time_day, sclsec = time_sec, &
      & caltype = time_caltype, zone = time_zone)
    call dcdatetimecreate(result, sclyear = time_year, &
      & sclmon = time_mon + diff % mon, &
      & sclday = time_day + diff % day, &
      & sclsec = time_sec + diff % sec, &
      & caltype = time_caltype, zone = time_zone)
  end function dcdatetime_add_ft

  function dcdatetime_add_tf(time, diff) result(result)
    use dc_date_generic, only: operator(+)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_types, only: dp
    implicit none
    type(dc_datetime):: result
    type(dc_datetime), intent(in):: time
    type(dc_difftime), intent(in):: diff
  continue
    result = diff + time
  end function dcdatetime_add_tf

  function dcdatetime_add_ff(diff1, diff2) result(result)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_date_internal, only: dcdate_normalize, dcdate_nondimcheck
    use dc_scaledsec, only: operator(+)
    implicit none
    type(dc_difftime):: result
    type(dc_difftime), intent(in):: diff1, diff2
  continue
    result % mon = diff1 % mon + diff2 % mon
    result % day = diff1 % day + diff2 % day
    result % sec = diff1 % sec + diff2 % sec
    result % day_seconds = diff1 % day_seconds
    call dcdate_nondimcheck(operator'dc_date#(+)', diff1, diff2, result)
    call dcdate_normalize(result % day, result % sec, result % day_seconds, result % nondim_flag)
  end function dcdatetime_add_ff

  function dcdatetime_add_fd(diff, sec) result(result)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_date_internal, only: dcdate_normalize, dcdate_nondimcheck
    use dc_scaledsec, only: operator(+)
    use dc_types, only: dp
    implicit none
    type(dc_difftime):: result
    type(dc_difftime), intent(in):: diff
    real(DP), intent(in):: sec
  continue
    result % mon = diff % mon
    result % day = diff % day
    result % sec = diff % sec + sec
    result % day_seconds = diff % day_seconds
    call dcdate_normalize(result % day, result % sec, result % day_seconds, result % nondim_flag)
  end function dcdatetime_add_fd

  function dcdatetime_add_fr(diff, sec) result(result)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_date_generic, only: operator(+)
    use dc_scaledsec, only: operator(+)
    use dc_types, only: dp
    implicit none
    type(dc_difftime):: result
    type(dc_difftime), intent(in):: diff
    real, intent(in):: sec
  continue
    result = diff + real( sec, dp )
  end function dcdatetime_add_fr

  function dcdatetime_add_fi(diff, sec) result(result)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_date_generic, only: operator(+)
    use dc_scaledsec, only: operator(+)
    use dc_types, only: dp
    implicit none
    type(dc_difftime):: result
    type(dc_difftime), intent(in):: diff
    integer, intent(in):: sec
  continue
    result = diff + real( sec, dp )
  end function dcdatetime_add_fi