I am helping an old scientist with some problems and have 1 program that he found and
modified about 20 yrs. ago, and runs fine as a 32 bit os\2 executable but i need it to
run under dos! I am not a programmer but a good hardware & software man, so I'am
pretty stupid about this problem, but here go's I have downloaded 6 different
compilers watcom77,silverfrost ftn95,gfortran,2 versions of g77 and f80. Watcom
says it is to old of program,find older compiler,silverfrost opens it,debugs, etc.
but is changing all the subroutines from "
real" to "complex" and vice-vesa,and
the g77's seem to install perfectly (library links and etc.) but wont even compile
the test.f programs.My problem is 1; to recompile "as is" or "upgrade" the code?
PROGRAM xconvlv
INTEGER N,N2,M
PARAMETER (N=2048,N2=2048,M=128)
INTEGER i,isign
REAL data(n),respns(m),resp(n),ans(n2),t3(n),DUMMY
OPEN(UNIT=1, FILE='C:\QKBAS20\FDATA1.DAT')
DO 1 i=1,N
READ(1,*) T3(i), data(i), DUMMY
continue
CLOSE(UNIT-1)
do 12 i=1,N
respns(i)=data(i)
resp(i)=respns(i)
continue
isign=-1
call convlv(data,N,resp,M,isign,ans)
OPEN(UNIT=1,FILE='C:\QKBAS20\FDATA9.DAT')
DO 14 i=1,N
WRITE(1,*) T3(i), ans(i)
continue
END
SUBROUTINE CONVLV(data,n,respns,m,isign,ans)
INTEGER isign,m,n,NMAX
REAL data(n),respns(n)
COMPLEX ans(n)
PARAMETER (NMAX=4096)
* uses realft, twofft
INTEGER i,no2
COMPLEX fft (NMAX)
do 11 i=1, (m-1)/2
respns(n+1-i)=respns(m+1-i)
continue
do 12 i=(m+3)/2,n-(m-1)/2
respns(i)=0.0
continue
call twofft (data,respns,fft,ans,n)
no2=n/2
do 13 i=1,no2+1
if (isign.eq.1) then
ans(i)=fft(i)*ans(i)/no2
else if (isign.eq.-1) then
if (abs(ans(i)) .eq.0.0) pause
ans(i)=fft(i)/ans(i)/no2
else
pause 'no meaning for isign in convlv'
endif
continue
ans(1)=cmplx(real (ans(1)),
real (ans(no2+1)))
call realft(ans,n,-1)
return
END
SUBROUTINE realft(data,n,isign)
INTEGER isign,n
REAL data(n)
* uses four1
INTEGER i,i1,i2,i3,i4,n2p3
REAL c1,c2,hli,hir,h2i,h2r,wis,wrs
DOUBLE PRECISION theta,wi,wpi,wpr,wr,wtemp
theta=3.141592653589793d0/dble(n/2)
cl=0.5
if (isign.eq.1) then
c2=-0.5
call four1(data,n/2,+1)
else
c2=0.5
theta=-theta
endif
(etc.,etc., etc.)
SUBROUTINE twofft(data,data2,fft1,fft2,n)
INTEGER n
REAL data1(n,data2(n)
COMPLEX fft1(n), fft2(n)
* uses four1
INTEGER j,n2
COMPLEX h1,h2,c1,c2
c1=cmplx(0.5,0.0)
c2=cmplx(0.0,-0.5)
do 11 j=1,n
fft1(j)=cmplx(data1(j),data2(j)
continue
call four1 (fft1,n,1)
fft2(1)=cmplx(aimag(fft1(1)),0.0)
fft1(1)=cmplx(real(fft1(1)),0.0)
n2=n+2
do 12 j=2,n/2+1
h1=c1*(fft1(j)+conjg(fft1(n2-j)))
h2=c2*(fft1(j)-conjg(fft1(n2-j)))
fft1(j)=h1
fft1(n2-j)=conjg(h1)
fft2(j)=h2
fft2(n2-j)=conjg(h2)
continue
return
END
SUBROUTINE four1(data,nn,isign)
INTEGER isign,nn
REAL data(2*nn)
INTEGER i,istep,j,m,mmax,n
REAL tempi,tempr
DOUBLE PRECISION theta, wi,wpi,wpr,wr,wtemp
n=2*nn
j=1
do 11 i=1,n,2
if(j.gt.i)then
tempr=data(j)
tempi=data(j+1)
(etc.,etc.,etc.,)
continue
mmax=istep
goto 2
endif
return
END
There are 4 subroutines with this that are about 3 pages of code and whould be much
easier to e-mail to someone if their able to help me with this.My e-mail is
[email protected] , or if someone could tell me where to get a "working"
compiler that could recompile this?
THANK-YOU, THANK-YOU,and THANK-YOU for any help with this!
The errors Iam getting are;
1.In a call to CONVLV from another procedure,the first argument was of a type
REAL(kind=1), it is now a COMPLEX(kind=1)
2.In a call to REALFT from another procedure, ... COMPLEX(kind=1) it is now
a REAL(kind=1)
3.In a call to TWOFFT from...COMPLEX(kind-1) it is now a REAL(kind=1)
4.In a previous call to FOUR1, the first argument was of a type REAL(kind=1)
it is now a COMPLEX(kind=1).
