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diff --git a/src/c/matrixOperations/multiplication/cmulma.c b/src/c/matrixOperations/multiplication/cmulma.c
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+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008-2008 - INRIA - Bruno JOFRET
+ *
+ *  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 "matrixMultiplication.h"
+
+/*
+** \brief Compute a multiplication for floats complex matrixes.
+** \param in1 : input matrix.
+** \param lines1 : lines of in1 matrix.
+** \param columns1 : columns of in1 matrix.
+** \param in2 : input arry.
+** \param lines2 : lines of in2 matrix.
+** \param columns2 : columns of in2 matrix.
+** \param out : Matrix that contains the multiplication in1 * in2.
+*/
+void	cmulma(floatComplex *in1, int lines1, int columns1,
+	       floatComplex *in2, int lines2, int columns2,
+	       floatComplex *out)
+{
+  int i = 0;
+  int k = 0;
+  floatComplex accu = FloatComplex(0, 0);
+
+  for (i = 0 ; i < lines1 * columns2 ; ++i)
+    {
+      accu = FloatComplex(0,0);
+      for (k = 0; k < columns1 ; ++k)
+	{
+	  accu = cadds(accu,
+		cmuls(in1[i % lines1 + k *lines1] ,
+			in2[k + (i / lines1) *lines2] ));
+	}
+      out[i] = accu;
+    }
+}