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program main
use IMSL
implicit none
real,parameter::pi=3.1415927
complex,parameter::fi=(0.0,1.0)
complex q
real t,f,w
  
complex, allocatable::h0(:,: )
real, allocatable:: eigenvalue(: )  
integer :: i,n
read*,n  
allocate(h0(4*n,4*n))
allocate(eigenvalue(n))
w=0.0
t=1.0
f=0.25
call hmatr(h0,n)  
eigenvalue=eig(h0)
do i=1,4*n
   write(*,"('eigenvalue=',f10.7)" )eigenvalue(i)  
end do
stop

contains
subroutine hmatr(h0,n)
integer n,i,j,n0
complex h0

complex,dimension(:,: )::c(4,4),a(4,4),b(4,4)
h0=0.0
a=reshape((/0.0,0.0,0.0,t,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0/),(/4,4/))
b=transpose(a)
do n0=1,2*n-1,2
    c=((/w,t*cmplx(exp(-fi*(-pi+2*pi/3*f*(1.5*n0+1/4)))),0,0,t*exp(fi*(-pi+2*pi/3*f*(1.5*n0+1/4))),w,t,0,0,t,w,t*exp(fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),0,0,t*exp(-fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),w/),(/4,4/))
     j=2*n0-1
      do j=1,4*n-3,4
       h0(j:j+3,j:j+3)=c
         if(j==1) then
          h0(j:j+3,j+4:j+7)=b;
          h0(j:j+3,4*n-3:4*n)=a;
        else if(j>=5.and.j<4*n-3) then
          h0(j:j+3,j+4:j+7)=b;
          h0(j:j+3,j-4:j-1)=a;
        else
          h0(4*n-3:4*n,1:4)=b;
          h0(j:j+3,j-4:j-1)=a;
        end if
      end do
end do
end subroutine hmatr
end

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1£©Error: The shape matching rules of actual arguments and dummy arguments have been violated.   [H0]
call hmatr(h0,n)  
-----------^
2£©E:\matlabxuexi\yyuu.f90(36) : Error: A constant or named constant is required in this context.
    c=((/w,t*cmplx(exp(-fi*(-pi+2*pi/3*f*(1.5*n0+1/4)))),0,0,t*exp(fi*(-pi+2*pi/3*f*(1.5*n0+1/4))),w,t,0,0,t,w,t*exp(fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),0,0,t*exp(-fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),w/),(/4,4/))
---------^
3£©E:\matlabxuexi\yyuu.f90(36) : Error: An INTEGER or REAL data type is required in this context.
    c=((/w,t*cmplx(exp(-fi*(-pi+2*pi/3*f*(1.5*n0+1/4)))),0,0,t*exp(fi*(-pi+2*pi/3*f*(1.5*n0+1/4))),w,t,0,0,t,w,t*exp(fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),0,0,t*exp(-fi*(-pi+2*pi/3*f*(1.5*(n0+1)+1/4))),w/),(/4,4/))
---------^
4£©E:\matlabxuexi\yyuu.f90(39) : Error: The syntax of this substring is invalid.   [H0]
       h0(j:j+3,j:j+3)=c
-------^
Error executing df.exe.

yyuu.obj - 4 error(s), 0 warning(s)

[ Last edited by Ìïɽ¶« on 2010-7-23 at 11:32 ]
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