1 files changed, 0 insertions, 49 deletions
diff --git a/src/signalProcessing/fft/r4tx.c b/src/signalProcessing/fft/r4tx.c
deleted file mode 100644
index a6a94110..00000000
--- a/src/signalProcessing/fft/r4tx.c
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
- * Copyright (C) 2008 - INRIA - Allan SIMON
- *
- * This file must be used under the terms of the CeCILL.
- * This source file is licensed as described in the file COPYING, which
- * you should have received as part of this distribution.  The terms
- * are also available at
- * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
- *
- */
-
-#include "fft_internal.h"
-
-
-
-/*
-** radix 4 iteration subroutine
-*/
-/* this function do in one turn the same computation that do radix 2 in two turns  */
-void r4tx( int nthpo, doubleComplex* c0, doubleComplex* c1, doubleComplex* c2, doubleComplex* c3)
-{
-  int kk;
-  doubleComplex temp1 , temp2 , temp3 , temp4 ;
-
-  for(kk=0;kk<nthpo;kk+=4)
-    {
-       /* real and imag parts alternate */
-
-    /* this first step is strictly equivalent than calling radix 2
-       except that radix would have needed 2 turns to compute what radix4 do in one */
-	temp1 = zadds ( c0[kk] , c2[kk] ) ;
-	temp2 = zdiffs( c0[kk] , c2[kk] ) ;
-	temp3 = zadds ( c1[kk] , c3[kk] ) ;
-	temp4 = zdiffs( c1[kk] , c3[kk] ) ;
-
-
-    /* strictly equivalent than calling radix2 with the temporary vector , but here also , radix4 do it in one turn
-    instead of two */
-	c0[kk] = zadds ( temp1 , temp3 );
-	c1[kk] = zdiffs( temp1 , temp3 );
-
-
-	c2[kk] = DoubleComplex ( zreals ( temp2 ) - zimags( temp4 ) , zimags ( temp2 ) + zreals( temp4 ) );
-	c3[kk] = DoubleComplex ( zreals ( temp2 ) + zimags( temp4 ) , zimags ( temp2 ) - zreals( temp4 ) );
-
-
-    }
-}