dcdatetimediv.f90 File Reference

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Functions/Subroutines
type(dc_difftime) function	dcdatetime_div_fi (diff, denominator)
type(dc_difftime) function	dcdatetime_div_fr (diff, denominator)
type(dc_difftime) function	dcdatetime_div_fd (diff, denominator)
real(dp) function	dcdatetime_div_ff (diff1, diff2)

Function/Subroutine Documentation

dcdatetime_div_fd()

type(dc_difftime) function dcdatetime_div_fd	(	type(dc_difftime), intent(in)	diff,
		real(dp), intent(in)	denominator
	)

Definition at line 51 of file dcdatetimediv.f90.

    !
    ! ※ 注意 : 月差を除算すると近似的結果になるおそれがあります
    use dc_date_internal, only: dcdate_normalize
    use dc_date_types, only: cyclic_mdays, dc_datetime, dc_difftime
    use dc_scaledsec, only: dc_scaled_sec, &
      & operator(<), operator(>), operator(<=), operator(>=), &
      & operator(+), operator(-), operator(*), operator(/), &
      & modulo, int, abs, sign
    use dc_types, only: dp
    implicit none
    type(DC_DIFFTIME):: result
    type(DC_DIFFTIME), intent(in):: diff
    real(DP), intent(in):: denominator
    type(DC_SCALED_SEC):: month, day
  continue
    month = int( diff % mon / denominator )
    result % mon = int(month)
    day =   int( diff % day / denominator ) &
      &   + int(cyclic_mdays * (month - result % mon))
    result % day = int(day)
    result % sec = &
      & diff % sec / denominator + (day - result % day) * diff % day_seconds
    result % day_seconds = diff % day_seconds
    result % nondim_flag = diff % nondim_flag
    call dcdate_normalize(result % day, result % sec, result % day_seconds, result % nondim_flag)

References dc_date_types::cyclic_mdays, dc_date_internal::dcdate_normalize(), and dc_types::dp.

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dcdatetime_div_ff()

real(dp) function dcdatetime_div_ff	(	type(dc_difftime), intent(in)	diff1,
		type(dc_difftime), intent(in)	diff2
	)

Definition at line 79 of file dcdatetimediv.f90.

    !
    ! ※ 注意 : 月差と日時の混在する除算は近似的結果になるおそれがあります
    use dc_date_types, only: cyclic_mdays
    use dc_scaledsec, only: dc_scaled_sec, assignment(=), &
      & operator(<), operator(>), operator(<=), operator(>=), &
      & operator(+), operator(-), operator(*), operator(/), &
      & modulo, int, abs, sign
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_types, only: dp
    implicit none
    real(DP):: result
    type(DC_DIFFTIME), intent(in):: diff1, diff2
  continue
    ! ゼロ割対応コードが必要か?
    result = &
      & (diff1 % day_seconds * (cyclic_mdays * diff1 % mon + diff1 % day) &
      & + diff1 % sec) / &
      & (diff2 % day_seconds * (cyclic_mdays * diff2 % mon + diff2 % day) &
      & + diff2 % sec)

References dc_date_types::cyclic_mdays, and dc_types::dp.

dcdatetime_div_fi()

type(dc_difftime) function dcdatetime_div_fi	(	type(dc_difftime), intent(in)	diff,
		integer, intent(in)	denominator
	)

Definition at line 10 of file dcdatetimediv.f90.

    !
    ! 日時差 *diff* を *denominator* で除算した結果を返します.
    !
    ! ※ 注意 : 月差を除算すると近似的結果になるおそれがあります
    use dc_date_types, only: cyclic_mdays
    use dc_scaledsec, only: dc_scaled_sec, &
      & operator(<), operator(>), operator(<=), operator(>=), &
      & operator(+), operator(-), operator(*), operator(/), &
      & modscl => mod, modulo, int, abs, sign
    use dc_date_types, only: dc_datetime, dc_difftime
    implicit none
    type(DC_DIFFTIME):: result
    type(DC_DIFFTIME), intent(in):: diff
    integer, intent(in):: denominator
  continue
    result % mon = int( diff % mon / denominator )
    ! 月からの近似的繰り下がりは日単位でしか行わない
    result % day = &
      &   int( diff % day / denominator ) &
      & + int( (cyclic_mdays * modscl(diff % mon, denominator)) / denominator )
    result % sec = diff % sec / denominator + &
      & (diff % day_seconds * modscl(diff % day, denominator)) / &
      & denominator
    result % nondim_flag = diff % nondim_flag

References dc_date_types::cyclic_mdays.

dcdatetime_div_fr()

type(dc_difftime) function dcdatetime_div_fr	(	type(dc_difftime), intent(in)	diff,
		real, intent(in)	denominator
	)

Definition at line 37 of file dcdatetimediv.f90.

    !
    ! ※ 注意 : 月差を除算すると近似的結果になるおそれがあります
    use dc_date_generic, only: operator(/)
    use dc_date_types, only: dc_datetime, dc_difftime
    use dc_types, only: dp
    implicit none
    type(DC_DIFFTIME):: result
    type(DC_DIFFTIME), intent(in):: diff
    real, intent(in):: denominator
  continue
    result = diff / real(denominator, dp)

References dc_types::dp.