From 7edbd124b350b41741c4c9f96a9d21180c5d029c Mon Sep 17 00:00:00 2001
From: jofret
Date: Fri, 11 Apr 2008 12:54:21 +0000
Subject: mimic Scilab behaviour

---
 src/auxiliaryFunctions/abs/cabss.c | 37 ++++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 13 deletions(-)

(limited to 'src/auxiliaryFunctions/abs/cabss.c')

diff --git a/src/auxiliaryFunctions/abs/cabss.c b/src/auxiliaryFunctions/abs/cabss.c
index a9826990..8cd766df 100644
--- a/src/auxiliaryFunctions/abs/cabss.c
+++ b/src/auxiliaryFunctions/abs/cabss.c
@@ -1,19 +1,30 @@
 /*
-**  -*- C -*-
-**
-** cabss.c
-** Made by  Bruno JOFRET <bruno.jofret@inria.fr>
-**
-** Started on  Mon Apr 23 17:08:52 2007 jofret
-** Last update Mon Apr 23 17:10:22 2007 jofret
-**
-** Copyright INRIA 2007
-*/
+ *  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 "abs.h"
+#include "sqrt.h"
+#include "max.h"
+#include "min.h"
 
 float cabss(floatComplex in) {
-  float real = creals(in);
-  float imag = cimags(in);
-  return (ssqrts( (real*real) + (imag*imag) ));
+  float real = sabss(creals(in));
+  float imag = sabss(cimags(in));
+  float zMax = max(real, imag);
+  float zMin = min(real, imag);
+
+  if(zMin == 0)
+    {
+      return zMax;
+    }
+  return zMax * (ssqrts(1 + (zMin / zMax) * (zMin / zMax)));
 }
-- 
cgit