From e8373dbc1f6aa6a6b9d19484896ec3ef84674a08 Mon Sep 17 00:00:00 2001
From: simon
Date: Fri, 24 Oct 2008 12:09:12 +0000
Subject: added ifft
---
src/signalProcessing/ifft/cifftma.c | 53 +++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 src/signalProcessing/ifft/cifftma.c
(limited to 'src/signalProcessing/ifft/cifftma.c')
diff --git a/src/signalProcessing/ifft/cifftma.c b/src/signalProcessing/ifft/cifftma.c
new file mode 100644
index 00000000..620b1609
--- /dev/null
+++ b/src/signalProcessing/ifft/cifftma.c
@@ -0,0 +1,53 @@
+/*
+ * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ * Copyright (C) 2008-2008 - 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 "ifft.h"
+#include <stdio.h>
+
+void cifftma ( floatComplex* in , int rows, int cols, floatComplex* out)
+{
+ int i = 0 ;
+ /* these 3 variable are created to permit to use the value in the fortran functions
+ because they need doubleComplex matrix as arguments and we can't cast directly the pointers
+ without having problems , i know that's ugly */
+ doubleComplex *dblin = NULL;
+ doubleComplex *dblout = NULL;
+
+
+
+ /* Array allocations*/
+ dblin = (doubleComplex*)malloc(sizeof(doubleComplex) * (unsigned int)(rows * cols));
+ dblout = (doubleComplex*)malloc(sizeof(doubleComplex) * (unsigned int)(rows * cols));
+
+
+
+ /*copy and cast all the floatComplex value into doubleComplex value */
+ for ( i = 0 ; i < (rows * cols) ; i ++ )
+ {
+ dblin[i] = DoubleComplex ( (double) creals( in[i]) , (double) cimags ( in[i])) ;
+ }
+
+ zifftma ( dblin, rows , cols , dblout );
+
+
+ for ( i = 0 ; i < (rows * cols) ; i++ )
+ {
+ out[i] = FloatComplex ((float) zreals ( dblout[i]) , (float) zimags ( dblout[i])) ;
+
+ }
+
+ free ( dblin);
+ free ( dblout);
+
+}
--
cgit