Arrays 通过fortran中的子例程传递未知大小的数组（在子例程中分配的数组）_Arrays_Fortran_Allocation_Subroutine

Arrays 通过fortran中的子例程传递未知大小的数组（在子例程中分配的数组）

arrays fortran

Arrays 通过fortran中的子例程传递未知大小的数组（在子例程中分配的数组）,arrays,fortran,allocation,subroutine,Arrays,Fortran,Allocation,Subroutine,下面有一个程序，它在第一个子例程（CALCONE）中创建了一个数组，然后我想把它传递到下一个子例程（CALCTWO）中，然后将它输出到主程序中的文件中。我不知道把INTENT（IN）、INTENT（OUT）语句放在哪里，因为数组需要在子程序CALCONE中分配（因为在我的程序中，长度是在CALCONE中确定的）——我已经放弃了我的尝试，以避免混淆。有人能帮我把它们放在正确的地方吗。一旦我有了一个模板，我将了解它在未来是如何工作的。谢谢我简化了程序，变量表示其他不能移动的东西。我只需要一种方法，

下面有一个程序，它在第一个子例程（CALCONE）中创建了一个数组，然后我想把它传递到下一个子例程（CALCTWO）中，然后将它输出到主程序中的文件中。我不知道把INTENT（IN）、INTENT（OUT）语句放在哪里，因为数组需要在子程序CALCONE中分配（因为在我的程序中，长度是在CALCONE中确定的）——我已经放弃了我的尝试，以避免混淆。有人能帮我把它们放在正确的地方吗。一旦我有了一个模板，我将了解它在未来是如何工作的。谢谢

我简化了程序，变量表示其他不能移动的东西。我只需要一种方法，在子程序之间移动一个数组，然后在主程序的末尾写出它

 program TEST
 implicit none

 integer a,b,c,d,reclen

 a = 1
 b = 2
 c = 3
 d = 4

 call CALCONE(a,b,c,d,array)

 call CALCTWO(e,f,g,h,array)

 inquire(iolength=reclen)array 
 open(unit=8,file='array_output.dat', &
   form="unformatted",access="stream")
 write(unit=8)array       
 close(unit=8)

 END PROGRAM TEST

 SUBROUTINE CALCONE(adummy,bdummy,cdummy,ddummy,arraydummy)
 IMPLICIT NONE

 integer i,j,k
 integer e,f,g,h,N
 !ALLOCATE ARRAY HERE OR IN MAIN PROGRAM?
 real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 ! N can only be is calculated here

 allocate(arraydummy(1:N,1:3))

 !POPULATE 'arraydummy'
 !PASS ARRAY BACK OUT TO NEXT SUBROUTINE FOR FURTHER PROCESSING IN CALCTWO
 END SUBROUTINE CALCTWO

 SUBROUTINE CALCTWO(edummy,fdummy,gdummy,hdummy,arraydummy)
 IMPLICIT NONE

 integer e,f,g,h
 !DEFINE HERE ALSO? i.e.
 !real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 arraydummy = arraydummy*e*f*g*h

 END SUBROUTINE CALCTWO

您不必在主程序中分配数组，但您肯定必须在那里声明它，并且必须将它作为参数传递（您可以这样做）。请注意，主程序中未定义符号

数组

 program TEST
 implicit none

 integer a,b,c,d,reclen

 a = 1
 b = 2
 c = 3
 d = 4

 call CALCONE(a,b,c,d,array)

 call CALCTWO(e,f,g,h,array)

 inquire(iolength=reclen)array 
 open(unit=8,file='array_output.dat', &
   form="unformatted",access="stream")
 write(unit=8)array       
 close(unit=8)

 END PROGRAM TEST

 SUBROUTINE CALCONE(adummy,bdummy,cdummy,ddummy,arraydummy)
 IMPLICIT NONE

 integer i,j,k
 integer e,f,g,h,N
 !ALLOCATE ARRAY HERE OR IN MAIN PROGRAM?
 real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 ! N can only be is calculated here

 allocate(arraydummy(1:N,1:3))

 !POPULATE 'arraydummy'
 !PASS ARRAY BACK OUT TO NEXT SUBROUTINE FOR FURTHER PROCESSING IN CALCTWO
 END SUBROUTINE CALCTWO

 SUBROUTINE CALCTWO(edummy,fdummy,gdummy,hdummy,arraydummy)
 IMPLICIT NONE

 integer e,f,g,h
 !DEFINE HERE ALSO? i.e.
 !real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 arraydummy = arraydummy*e*f*g*h

 END SUBROUTINE CALCTWO

确保为SUB提供显式接口。因为您使用高级特性（可分配的伪参数），所以这是必要的。最好是将它们放在一个模块中

在这两种情况下，数组都必须定义为伪参数。我在第一个声明中将其声明为intent（out），因为它是在开始时分配的。这并不是绝对必要的

另一个选项是在模块中声明数组，并让模块过程共享它

免责声明：我没有试图编译它

 module subs
   integer,parameter :: rp = kind(1d0)


   contains




   SUBROUTINE CALCONE(adummy,bdummy,cdummy,ddummy,arraydummy)
   IMPLICIT NONE

   integer i,j,k
   integer e,f,g,h,N
   !ALLOCATE ARRAY HERE OR IN MAIN PROGRAM?
   real(rp),   allocatable, intent(out) :: arraydummy(:,:)

   e = a + 1
   f = b + 1
   g = c + 1
   h = d + 1

   !N can only be is calculated here

    allocate(arraydummy(1:N,1:3))

   !POPULATE 'arraydummy'
   !PASS ARRAY BACK OUT TO NEXT SUBROUTINE FOR FURTHER PROCESSING IN CALCTWO
   END SUBROUTINE CALCTWO

   SUBROUTINE CALCTWO(edummy,fdummy,gdummy,hdummy,arraydummy)
   IMPLICIT NONE

   integer e,f,g,h
   !DEFINE HERE ALSO? i.e.
   real(rp),   allocatable, intent(inout)  :: arraydummy(:,:)

   e = a + 1
   f = b + 1
   g = c + 1
   h = d + 1

   arraydummy = arraydummy*e*f*g*h

   END SUBROUTINE CALCTWO


 end module subs

 program TEST

 use subs

 implicit none

 integer a,b,c,d,reclen

 real(rp),allocatable :: array

 a = 1
 b = 2
 c = 3
 d = 4

 call CALCONE(a,b,c,d,array)

 call CALCTWO(e,f,g,h,array)

 inquire(iolength=reclen)array 
 open(unit=8,file='array_output.dat', &
   form="unformatted",access="stream")
 write(unit=8)array       
 close(unit=8)

 END PROGRAM TEST

您不必在主程序中分配数组，但您肯定必须在那里声明它，并且必须将它作为参数传递（您可以这样做）。请注意，主程序中未定义符号

数组

 program TEST
 implicit none

 integer a,b,c,d,reclen

 a = 1
 b = 2
 c = 3
 d = 4

 call CALCONE(a,b,c,d,array)

 call CALCTWO(e,f,g,h,array)

 inquire(iolength=reclen)array 
 open(unit=8,file='array_output.dat', &
   form="unformatted",access="stream")
 write(unit=8)array       
 close(unit=8)

 END PROGRAM TEST

 SUBROUTINE CALCONE(adummy,bdummy,cdummy,ddummy,arraydummy)
 IMPLICIT NONE

 integer i,j,k
 integer e,f,g,h,N
 !ALLOCATE ARRAY HERE OR IN MAIN PROGRAM?
 real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 ! N can only be is calculated here

 allocate(arraydummy(1:N,1:3))

 !POPULATE 'arraydummy'
 !PASS ARRAY BACK OUT TO NEXT SUBROUTINE FOR FURTHER PROCESSING IN CALCTWO
 END SUBROUTINE CALCTWO

 SUBROUTINE CALCTWO(edummy,fdummy,gdummy,hdummy,arraydummy)
 IMPLICIT NONE

 integer e,f,g,h
 !DEFINE HERE ALSO? i.e.
 !real*8,   allocatable  :: arraydummy(:,:)

 e = a + 1
 f = b + 1
 g = c + 1
 h = d + 1

 arraydummy = arraydummy*e*f*g*h

 END SUBROUTINE CALCTWO

确保为SUB提供显式接口。因为您使用高级特性（可分配的伪参数），所以这是必要的。最好是将它们放在一个模块中

在这两种情况下，数组都必须定义为伪参数。我在第一个声明中将其声明为intent（out），因为它是在开始时分配的。这并不是绝对必要的

另一个选项是在模块中声明数组，并让模块过程共享它

免责声明：我没有试图编译它

 module subs
   integer,parameter :: rp = kind(1d0)


   contains




   SUBROUTINE CALCONE(adummy,bdummy,cdummy,ddummy,arraydummy)
   IMPLICIT NONE

   integer i,j,k
   integer e,f,g,h,N
   !ALLOCATE ARRAY HERE OR IN MAIN PROGRAM?
   real(rp),   allocatable, intent(out) :: arraydummy(:,:)

   e = a + 1
   f = b + 1
   g = c + 1
   h = d + 1

   !N can only be is calculated here

    allocate(arraydummy(1:N,1:3))

   !POPULATE 'arraydummy'
   !PASS ARRAY BACK OUT TO NEXT SUBROUTINE FOR FURTHER PROCESSING IN CALCTWO
   END SUBROUTINE CALCTWO

   SUBROUTINE CALCTWO(edummy,fdummy,gdummy,hdummy,arraydummy)
   IMPLICIT NONE

   integer e,f,g,h
   !DEFINE HERE ALSO? i.e.
   real(rp),   allocatable, intent(inout)  :: arraydummy(:,:)

   e = a + 1
   f = b + 1
   g = c + 1
   h = d + 1

   arraydummy = arraydummy*e*f*g*h

   END SUBROUTINE CALCTWO


 end module subs

 program TEST

 use subs

 implicit none

 integer a,b,c,d,reclen

 real(rp),allocatable :: array

 a = 1
 b = 2
 c = 3
 d = 4

 call CALCONE(a,b,c,d,array)

 call CALCTWO(e,f,g,h,array)

 inquire(iolength=reclen)array 
 open(unit=8,file='array_output.dat', &
   form="unformatted",access="stream")
 write(unit=8)array       
 close(unit=8)

 END PROGRAM TEST