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diff --git a/src/c/matrixOperations/multiplication/zmulma.c b/src/c/matrixOperations/multiplication/zmulma.c
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+++ b/src/c/matrixOperations/multiplication/zmulma.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 <stdlib.h>
+#ifndef WITHOUT_BLAS
+#include "lapack.h"
+#endif
+#include "matrixMultiplication.h"
+
+/*
+** \brief Compute a multiplication for doubles 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	zmulma(doubleComplex *in1, int lines1, int columns1,
+	       doubleComplex *in2, int lines2, int columns2,
+	       doubleComplex *out)
+{
+#ifndef WITHOUT_BLAS
+  /*
+  ** USES BLAS DGEMM FUNCTION.
+  */
+  int i = 0;
+  double One		= 1;
+  double MinusOne	= -1;
+  double Zero		= 0;
+
+  double *in1Real = (double*)malloc((unsigned int) lines1 * (unsigned int) columns1 * sizeof(double));
+  double *in1Imag = (double*)malloc((unsigned int) lines1 * (unsigned int) columns1 * sizeof(double));
+  double *in2Real = (double*)malloc((unsigned int) lines2 * (unsigned int) columns2 * sizeof(double));
+  double *in2Imag = (double*)malloc((unsigned int) lines2 * (unsigned int) columns2 * sizeof(double));
+
+  double *RealOut = (double*)malloc((unsigned int) lines1 * (unsigned int) columns2 * sizeof(double));
+  double *ImagOut = (double*)malloc((unsigned int) lines1 * (unsigned int) columns2 * sizeof(double));
+
+  zreala(in1, lines1 * columns1, in1Real);
+  zreala(in2, lines2 * columns2, in2Real);
+  zimaga(in1, lines1 * columns1, in1Imag);
+  zimaga(in2, lines2 * columns2, in2Imag);
+
+  /* Cr <-  1*Ar*Br + 0*Cr */
+  dgemm_("N","N", &lines1, &columns2, &columns1, &One,
+	 in1Real, &lines1, in2Real, &lines2, &Zero, RealOut, &lines1);
+  
+
+  /* Cr <- -1*Ai*Bi + 1*Cr */
+  dgemm_("N","N", &lines1, &columns2, &columns1, &MinusOne,
+	 in1Imag, &lines1, in2Imag, &lines2, &One, RealOut, &lines1);
+
+  /* Ci <-  1*Ar*Bi + 0*Ci */
+  dgemm_("N","N", &lines1, &columns2, &columns1, &One,
+	 in1Real, &lines1, in2Imag, &lines2, &Zero, ImagOut, &lines1);
+
+  /* Ci <-  1*Ai*Br + 1*Ci */
+  dgemm_("N","N", &lines1, &columns2, &columns1, &One,
+	 in1Imag, &lines1, in2Real, &lines2, &One, ImagOut, &lines1);
+
+  /* Now fill output matrix */
+  for(i = 0 ; i < lines1 * columns2 ; ++i)
+    {
+      out[i] = DoubleComplex(RealOut[i], ImagOut[i]);
+    }
+  /* FREE allocated variguru_dim_structables */
+  free(in1Real);
+  free(in2Real);
+  free(in1Imag);
+  free(in2Imag);
+  free(RealOut);
+  free(ImagOut);
+#else
+  /*
+  ** DO NOT USE ANY BLAS FUNCTION.
+  */
+  int i = 0;
+  int k = 0;
+  doubleComplex accu = DoubleComplex(0, 0);
+
+  for (i = 0 ; i < lines1 * columns2 ; ++i)
+    {
+      accu = DoubleComplex(0,0);
+      for (k = 0; k < columns1 ; ++k)
+	{
+	  accu = zadds(accu,
+		zmuls(in1[i % lines1 + k *lines1] ,
+			in2[k + (i / lines1) *lines2] ));
+	}
+      out[i] = accu;
+    }
+#endif
+}