dcdatetimesub.f90 File Reference

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Functions/Subroutines
type(dc_datetime) function	dcdatetime_sub_tf (time, diff)
	利用者定義演算子 (-) のための関数
type(dc_difftime) function	dcdatetime_sub_tt (time1, time2)
type(dc_difftime) function	dcdatetime_sub_ff (diff1, diff2)
type(dc_difftime) function	dcdatetime_sub_fd (diff, sec)
type(dc_difftime) function	dcdatetime_sub_fr (diff, sec)
type(dc_difftime) function	dcdatetime_sub_fi (diff, sec)

Function/Subroutine Documentation

dcdatetime_sub_fd()

type(dc_difftime) function dcdatetime_sub_fd	(	type(dc_difftime), intent(in)	diff,
		real(dp), intent(in)	sec )

DC_DIFFTIME から倍精度実数を減算

日時差から倍精度実数の秒数を減算します.

Parameters

[in]	diff	日時差 (被減数)
[in]	sec	減算する秒数 (倍精度実数)

Returns

減算結果

Definition at line 164 of file dcdatetimesub.f90.

 
  use dc_date_internal, only: dcdate_normalize
  use dc_date_types, only: dc_datetime, dc_difftime
  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)

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

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dcdatetime_sub_ff()

type(dc_difftime) function dcdatetime_sub_ff	(	type(dc_difftime), intent(in)	diff1,
		type(dc_difftime), intent(in)	diff2 )

2つの DC_DIFFTIME を減算

2つの日時差を減算します.

Parameters

[in]	diff1	1番目の日時差 (被減数)
[in]	diff2	2番目の日時差 (減数)

Returns

減算結果

Definition at line 128 of file dcdatetimesub.f90.

 
  use dc_date_internal, only: dcdate_normalize, dcdate_nondimcheck
  use dc_date_types, only: dc_datetime, dc_difftime
  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('dc_date#operator(-)', diff1, diff2, result)
  call dcdate_normalize(result % day, result % sec, result % day_seconds, result % nondim_flag)

References dc_date_internal::dcdate_nondimcheck(), and dc_date_internal::dcdate_normalize().

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dcdatetime_sub_fi()

type(dc_difftime) function dcdatetime_sub_fi	(	type(dc_difftime), intent(in)	diff,
		integer, intent(in)	sec )

DC_DIFFTIME から整数を減算

日時差から整数の秒数を減算します.

Parameters

[in]	diff	日時差 (被減数)
[in]	sec	減算する秒数 (整数)

Returns

減算結果

Definition at line 234 of file dcdatetimesub.f90.

 
  use dc_date_generic, only: operator(-)
  use dc_date_types, only: dc_datetime, dc_difftime
  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 )

References dc_types::dp.

dcdatetime_sub_fr()

type(dc_difftime) function dcdatetime_sub_fr	(	type(dc_difftime), intent(in)	diff,
		real, intent(in)	sec )

DC_DIFFTIME から単精度実数を減算

日時差から単精度実数の秒数を減算します.

Parameters

[in]	diff	日時差 (被減数)
[in]	sec	減算する秒数 (単精度実数)

Returns

減算結果

Definition at line 201 of file dcdatetimesub.f90.

 
  use dc_date_generic, only: operator(-)
  use dc_date_types, only: dc_datetime, dc_difftime
  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 )

References dc_types::dp.

dcdatetime_sub_tf()

type(dc_datetime) function dcdatetime_sub_tf	(	type(dc_datetime), intent(in)	time,
		type(dc_difftime), intent(in)	diff )

利用者定義演算子 (-) のための関数

Author

Yasuhiro MORIKAWA, Eizi TOYODA

Copyright

Copyright (C) GFD Dennou Club, 2000-2026. All rights reserved.
License is BSD-2-Clause. see COPYRIGHT in detail

このファイルには dc_date_types#DC_DATETIME および dc_date_types#DC_DIFFTIME の減算の実装手続きが含まれています。

DC_DATETIME から DC_DIFFTIME を減算

日時から日時差を減算します.

Parameters

[in]	time	減算元の日時
[in]	diff	減算する日時差

Returns

減算結果

Definition at line 43 of file dcdatetimesub.f90.

 
  use dc_date_generic, only: eval, dcdatetimecreate
  use dc_date_types, only: dc_datetime, dc_difftime
  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_DATETIME), intent(in):: time
  type(DC_DIFFTIME), intent(in):: diff
  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)

References dc_date_types::caltype.

dcdatetime_sub_tt()

type(dc_difftime) function dcdatetime_sub_tt	(	type(dc_datetime), intent(in)	time1,
		type(dc_datetime), intent(in)	time2 )

2つの DC_DATETIME を減算

2つの日時の差を計算して返します.

Parameters

[in]	time1	1番目の日時 (被減数)
[in]	time2	2番目の日時 (減数)

Returns

time1 と time2 の日時差

Definition at line 89 of file dcdatetimesub.f90.

 
  use dc_date_generic, only: evalsclsec, zonetodiff, operator(-)
  use dc_date_types, only: dc_datetime, dc_difftime
  use dc_date_internal, only: dcdate_normalize
  use dc_scaledsec, only: dc_scaled_sec, &
    & operator(<), operator(>), operator(<=), operator(>=), &
    & operator(+), operator(-), operator(*), operator(/), &
    & modulo, int, abs, sign
  implicit none
  type(DC_DIFFTIME):: result
  type(DC_DATETIME), intent(in):: time1, time2
continue
  result % day = time1 % day - time2 % day
  result % sec = time1 % sec - time2 % sec &
    & + evalsclsec(zonetodiff(time1 % zone) - zonetodiff(time2 % zone))
  result % day_seconds = time1 % day_seconds
  call dcdate_normalize(result % day, result % sec, result % day_seconds, result % nondim_flag)

References dc_date_internal::dcdate_normalize().

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