dcdatetimemul.f90 File Reference

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Functions/Subroutines
type(dc_difftime) function	dcdatetime_mul_if (factor, diff)
	Functions for user defined operation (*).
type(dc_difftime) function	dcdatetime_mul_fi (diff, factor)
type(dc_difftime) function	dcdatetime_mul_rf (factor, diff)
type(dc_difftime) function	dcdatetime_mul_fr (diff, factor)
type(dc_difftime) function	dcdatetime_mul_df (factor, diff)
type(dc_difftime) function	dcdatetime_mul_fd (diff, factor)

Function/Subroutine Documentation

dcdatetime_mul_df()

type(dc_difftime) function dcdatetime_mul_df	(	real(dp), intent(in)	factor,
		type(dc_difftime), intent(in)	diff )

Multiply double precision by DC_DIFFTIME

Return the result of multiplying time difference diff by factor.

Note

Multiplying months by non-integer may produce approximate results.

Parameters

[in]	factor	Double precision multiplier
[in]	diff	Time difference to multiply

Returns

Result of multiplication

Definition at line 186 of file dcdatetimemul.f90.

 
  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
  real(DP), intent(in):: factor
  type(DC_DIFFTIME), intent(in):: diff
  type(DC_SCALED_SEC):: month, day
continue
  month = factor * diff % mon
  result % mon = int(month)
  day = factor * diff % day + int(cyclic_mdays * (month - result % mon))
  result % day = int(day)
  result % sec = &
    & factor * diff % sec + (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_mul_fd()

type(dc_difftime) function dcdatetime_mul_fd	(	type(dc_difftime), intent(in)	diff,
		real(dp), intent(in)	factor )

Multiply DC_DIFFTIME by double precision

Return the result of multiplying time difference diff by factor.

Note

Multiplying months by non-integer may produce approximate results.

Parameters

[in]	diff	Time difference to multiply
[in]	factor	Double precision multiplier

Returns

Result of multiplication

Definition at line 235 of file dcdatetimemul.f90.

 
  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(DP), intent(in):: factor
continue
  result = factor * diff

References dc_types::dp.

dcdatetime_mul_fi()

type(dc_difftime) function dcdatetime_mul_fi	(	type(dc_difftime), intent(in)	diff,
		integer, intent(in)	factor )

Multiply DC_DIFFTIME by integer

Return the result of multiplying time difference diff by factor.

Parameters

[in]	diff	Time difference to multiply
[in]	factor	Integer multiplier

Returns

Result of multiplication

Definition at line 80 of file dcdatetimemul.f90.

 
  use dc_date_generic, only: operator(*)
  use dc_date_types, only: dc_datetime, dc_difftime
  implicit none
  type(DC_DIFFTIME):: result
  type(DC_DIFFTIME), intent(in):: diff
  integer, intent(in):: factor
continue
  result = factor * diff

dcdatetime_mul_fr()

type(dc_difftime) function dcdatetime_mul_fr	(	type(dc_difftime), intent(in)	diff,
		real, intent(in)	factor )

Multiply DC_DIFFTIME by single precision

Return the result of multiplying time difference diff by factor.

Note

Multiplying months by non-integer may produce approximate results.

Parameters

[in]	diff	Time difference to multiply
[in]	factor	Single precision multiplier

Returns

Result of multiplication

Definition at line 151 of file dcdatetimemul.f90.

 
  use dc_date_generic, only: operator(*)
  use dc_date_types, only: dc_datetime, dc_difftime
  implicit none
  type(DC_DIFFTIME):: result
  type(DC_DIFFTIME), intent(in):: diff
  real, intent(in):: factor
continue
  result = factor * diff

dcdatetime_mul_if()

type(dc_difftime) function dcdatetime_mul_if	(	integer, intent(in)	factor,
		type(dc_difftime), intent(in)	diff )

Functions for user defined operation (*).

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

This file contains implementation procedures of multiplication for dc_date_types#DC_DIFFTIME.

Multiply integer by DC_DIFFTIME

Return the result of multiplying time difference diff by factor.

Parameters

[in]	factor	Integer multiplier
[in]	diff	Time difference to multiply

Returns

Result of multiplication

Definition at line 43 of file dcdatetimemul.f90.

 
  use dc_date_types, only: dc_datetime, dc_difftime
  use dc_date_internal, only: dcdate_normalize
  use dc_scaledsec, only: operator(*)
  implicit none
  type(DC_DIFFTIME):: result
  integer, intent(in):: factor
  type(DC_DIFFTIME), intent(in):: diff
continue
  result % mon = factor * diff % mon
  result % day = factor * diff % day
  result % sec = factor * diff % sec
  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_internal::dcdate_normalize().

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dcdatetime_mul_rf()

type(dc_difftime) function dcdatetime_mul_rf	(	real, intent(in)	factor,
		type(dc_difftime), intent(in)	diff )

Multiply single precision by DC_DIFFTIME

Return the result of multiplying time difference diff by factor.

Note

Multiplying months by non-integer may produce approximate results.

Parameters

[in]	factor	Single precision multiplier
[in]	diff	Time difference to multiply

Returns

Result of multiplication

Definition at line 115 of file dcdatetimemul.f90.

 
  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
  real, intent(in):: factor
  type(DC_DIFFTIME), intent(in):: diff
continue
  result = real(factor, dp) * diff

References dc_types::dp.