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authorjofret2009-04-28 06:53:00 +0000
committerjofret2009-04-28 06:53:00 +0000
commitb56c1d5508edf80f36c9a48e8806641f5cdf2cd8 (patch)
tree921ff5c8b47befe9b797cffa57bea9c940a7224c /src/elementaryFunctions/acosh/cacoshs.c
parent127ac18608c72acfed9d59599252ad62cb562ee5 (diff)
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Moving source code
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diff --git a/src/elementaryFunctions/acosh/cacoshs.c b/src/elementaryFunctions/acosh/cacoshs.c
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-/*
- * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
- * Copyright (C) 2007-2008 - 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
- *
- */
-
-/*
-// METHOD
-// based on the formula :
-//
-// acosh(z) = sign(-imag(acos(z)) i acos(z)
-//
-// sign(x) = 1 if x >= 0
-// | -1 if x < 0
-*/
-
-#include "acosh.h"
-#include "acos.h"
-
-#define localSign(x) x >= 0 ? 1.0f : -1.0f
-
-floatComplex cacoshs(floatComplex z) {
- floatComplex acos_z = cacoss(z);
- float sign = localSign(-cimags(acos_z));
-
- return FloatComplex(-sign * cimags(acos_z), sign * creals(acos_z));
-}