From acc2ea0c48ac76c5965606637c241d088721c915 Mon Sep 17 00:00:00 2001
From: Joe Taylor <k1jt@arrl.org>
Date: Tue, 5 Apr 2016 13:17:38 +0000
Subject: [PATCH] Refactor parts of jt9w.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6576 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 lib/Makefile.jt9w |  2 +-
 lib/decode9w.f90  | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 lib/jt9w.f90      | 53 ++-----------------------------------------
 3 files changed, 60 insertions(+), 52 deletions(-)
 create mode 100644 lib/decode9w.f90

diff --git a/lib/Makefile.jt9w b/lib/Makefile.jt9w
index 3d44edb7c..797a7e97b 100644
--- a/lib/Makefile.jt9w
+++ b/lib/Makefile.jt9w
@@ -35,7 +35,7 @@ all:	 jt9w
 
 OBJS1 = jt9w.o smo.o sync9w.o pctile.o shell.o lorentzian.o fchisq0.o \
       softsym9w.o four2a.o interleave9.o jt9fano.o fano232.o packjt.o \
-      deg2grid.o grid2deg.o fmtmsg.o db.o
+      deg2grid.o grid2deg.o fmtmsg.o db.o decode9w.o
       
 jt9w: $(OBJS1) 
 	$(FC) -o jt9w $(OBJS1) -lfftw3f
diff --git a/lib/decode9w.f90 b/lib/decode9w.f90
new file mode 100644
index 000000000..80d8255f1
--- /dev/null
+++ b/lib/decode9w.f90
@@ -0,0 +1,57 @@
+subroutine decode9w(nutc,nfqso,ntol,nsubmode,ss,id2)
+
+  parameter (NSMAX=6827,NZMAX=60*12000)
+  real ss(184,NSMAX)
+  real ccfred(NSMAX)
+  real ccfblue(-9:18)
+  real a(5)
+  integer*2 id2(NZMAX)
+  integer*1 i1SoftSymbols(207)
+  character*22 decoded
+
+  df=12000.0/16384.0
+  nsps=6912
+  tstep=nsps*0.5/12000.0
+  npts=52*12000
+  limit=10000
+  ntol=100
+
+  ia=nint((nfqso-ntol)/df)
+  ib=nint((nfqso+ntol)/df)
+  lag1=-int(2.5/tstep + 0.9999)
+  lag2=int(5.0/tstep + 0.9999)
+  nhsym=184
+  do iter=1,2
+     nadd=3
+     if(iter.eq.2) nadd=2*nint(0.375*a(4)) + 1
+     call sync9w(ss,nhsym,lag1,lag2,ia,ib,ccfred,ccfblue,ipk,lagpk,nadd)
+     sum1=sum(ccfblue) - ccfblue(lagpk-1)-ccfblue(lagpk) -ccfblue(lagpk+1)
+     sq=dot_product(ccfblue,ccfblue) - ccfblue(lagpk-1)**2 - &
+          ccfblue(lagpk)**2 - ccfblue(lagpk+1)**2
+     base=sum1/25.0
+     rms=sqrt(sq/24.0)
+     snr=(ccfblue(lagpk)-base)/rms
+     nsnr=nint(db(snr)-29.7)
+     xdt0=lagpk*tstep
+        
+     call lorentzian(ccfred(ia),ib-ia+1,a)
+     f0=(ia+a(3))*df
+!        write(*,3001) nadd,a,base,rms,snr,xdt,f0,ipk,lagpk
+!3001    format(i3,9f7.2,f7.1,2i5)
+
+     ccfblue=(ccfblue-base)/rms
+!        rewind 16
+!        do lag=lag1,lag2
+!           write(16,3002) lag*tstep,ccfblue(lag)
+!3002       format(2f10.3)
+!        enddo
+
+  enddo
+
+  call softsym9w(id2,npts,xdt0,f0,a(4)*df,nsubmode,xdt1,i1softsymbols)
+  call jt9fano(i1softsymbols,limit,nlim,decoded)
+  write(*,1100) nutc,nsnr,xdt1-1.0,nint(f0),decoded,nlim
+1100 format(i4.4,i4,f5.1,i5,1x,'@',1x,a22,i10)
+
+  return
+end subroutine decode9w
diff --git a/lib/jt9w.f90 b/lib/jt9w.f90
index b3fb62281..923b0dc48 100644
--- a/lib/jt9w.f90
+++ b/lib/jt9w.f90
@@ -3,13 +3,8 @@ program jt9w
   parameter (NSMAX=6827,NZMAX=60*12000)
   real ss(184,NSMAX)
   real ref(NSMAX)
-  real ccfred(NSMAX)
-  real ccfblue(-9:18)
-  real a(5)
   integer*2 id2(NZMAX)
   character*12 arg
-  character*22 decoded
-  integer*1 i1SoftSymbols(207)
 
   call getarg(1,arg)
   read(arg,*) iutc
@@ -19,54 +14,10 @@ program jt9w
      read(20,*) j,freq,ref(i)
   enddo
 
-  df=12000.0/16384.0
-  nsps=6912
-  tstep=nsps*0.5/12000.0
-  npts=52*12000
-  limit=10000
-  ntol=100
-
   do ifile=1,999
-     read(60,end=999) nutc,nfqso,ntol,ndepth,nmode,nsubmode,nzhsym,ss,id2
+     read(60,end=999) nutc,nfqso,ntol,ndepth,nmode,nsubmode,ss,id2
      if(nutc.ne.iutc) cycle
-
-     ia=nint((nfqso-ntol)/df)
-     ib=nint((nfqso+ntol)/df)
-     lag1=-int(2.5/tstep + 0.9999)
-     lag2=int(5.0/tstep + 0.9999)
-     nhsym=184
-     do iter=1,2
-        nadd=3
-        if(iter.eq.2) nadd=2*nint(0.375*a(4)) + 1
-        call sync9w(ss,nhsym,lag1,lag2,ia,ib,ccfred,ccfblue,ipk,lagpk,nadd)
-        sum1=sum(ccfblue) - ccfblue(lagpk-1)-ccfblue(lagpk) -ccfblue(lagpk+1)
-        sq=dot_product(ccfblue,ccfblue) - ccfblue(lagpk-1)**2 - &
-             ccfblue(lagpk)**2 - ccfblue(lagpk+1)**2
-        base=sum1/25.0
-        rms=sqrt(sq/24.0)
-        snr=(ccfblue(lagpk)-base)/rms
-        nsnr=db(snr)-29.7
-        xdt0=lagpk*tstep
-        
-        call lorentzian(ccfred(ia),ib-ia+1,a)
-        f0=(ia+a(3))*df
-!        write(*,3001) nadd,a,base,rms,snr,xdt,f0,ipk,lagpk
-!3001    format(i3,9f7.2,f7.1,2i5)
-
-        ccfblue=(ccfblue-base)/rms
-!        rewind 16
-!        do lag=lag1,lag2
-!           write(16,3002) lag*tstep,ccfblue(lag)
-!3002       format(2f10.3)
-!        enddo
-
-     enddo
-
-     call softsym9w(id2,npts,xdt0,f0,a(4)*df,nsubmode,xdt1,i1softsymbols)
-     call jt9fano(i1softsymbols,limit,nlim,decoded)
-     write(*,1100) nutc,nsnr,xdt1-1.0,nint(f0),decoded,nlim
-1100 format(i4.4,i4,f5.1,i5,1x,'@',1x,a22,i10)
-
+     call decode9w(nutc,nfqso,ntol,nsubmode,ss,id2)
   enddo
 
 999 end program jt9w