dcdatetimemul.f90

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! -*- mode: f90; coding: utf-8 -*-
!-----------------------------------------------------------------------
! Copyright (c) 2000-2026 Gtool Development Group. All rights reserved.
!-----------------------------------------------------------------------
 
function dcdatetime_mul_if(factor, diff) result(result)
 
  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)
end function dcdatetime_mul_if
 
function dcdatetime_mul_fi(diff, factor) result(result)
 
  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
end function dcdatetime_mul_fi
 
function dcdatetime_mul_rf(factor, 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_difftime):: result
  real, intent(in):: factor
  type(dc_difftime), intent(in):: diff
continue
  result = real(factor, dp) * diff
end function dcdatetime_mul_rf
 
function dcdatetime_mul_fr(diff, factor) result(result)
 
  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
end function dcdatetime_mul_fr
 
function dcdatetime_mul_df(factor, diff) result(result)
 
  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)
end function dcdatetime_mul_df
 
function dcdatetime_mul_fd(diff, factor) 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_difftime):: result
  type(dc_difftime), intent(in):: diff
  real(dp), intent(in):: factor
continue
  result = factor * diff
end function dcdatetime_mul_fd