2.3-1/src/c/elementaryFunctions/cos/zcoss.c


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/*
 *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 *  Copyright (C) 2006-2008 - 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 "cos.h"
#include "sin.h"
#include "cosh.h"
#include "sinh.h"

doubleComplex		zcoss(doubleComplex z) {
  double real = zreals(z);
  double imag = zimags(z);

  return DoubleComplex(dcoss(real) * dcoshs(imag),
		      -dsins(real) * dsinhs(imag));
}