From fa2ff1b38ad8fbb177ae544eee9953d7d5bb0259 Mon Sep 17 00:00:00 2001
From: Joe Taylor <k1jt@arrl.org>
Date: Tue, 10 Jul 2012 13:44:17 +0000
Subject: [PATCH] Replacing db.f90 and analytic.f90.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/jtms3@2504 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 libm65/analytic.f90 | 24 ++++++++++++++++++++++++
 libm65/db.f90       |  5 +++++
 mainwindow.cpp      |  2 +-
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 libm65/analytic.f90
 create mode 100644 libm65/db.f90

diff --git a/libm65/analytic.f90 b/libm65/analytic.f90
new file mode 100644
index 000000000..1a84ca9e2
--- /dev/null
+++ b/libm65/analytic.f90
@@ -0,0 +1,24 @@
+subroutine analytic(d,npts,nfft,s,c)
+
+! Convert real data to analytic signal
+
+  real d(npts)
+  real s(npts)
+  complex c(npts)
+
+  nh=nfft/2
+  fac=2.0/nfft
+  c(1:npts)=fac*d(1:npts)
+  c(npts+1:nfft)=0.
+  call four2a(c,nfft,1,-1,1)               !Forward c2c FFT
+
+  do i=1,nh
+     s(i)=real(c(i))**2 + aimag(c(i))**2
+  enddo
+
+  c(1)=0.5*c(1)
+  c(nh+2:nfft)=0.
+  call four2a(c,nfft,1,1,1)                !Inverse c2c FFT
+
+  return
+end subroutine analytic
diff --git a/libm65/db.f90 b/libm65/db.f90
new file mode 100644
index 000000000..aa58f43f1
--- /dev/null
+++ b/libm65/db.f90
@@ -0,0 +1,5 @@
+real function db(x)
+  db=-99.0
+  if(x.gt.1.259e-10) db=10.0*log10(x)
+  return
+end function db
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 08534b213..7aa60d349 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,4 +1,4 @@
-//-------------------------------------------------------------- MainWindow
+//------------------------------------------------------------- MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "devsetup.h"