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authorSiddhesh Wani2015-05-25 14:46:31 +0530
committerSiddhesh Wani2015-05-25 14:46:31 +0530
commit6a320264c2de3d6dd8cc1d1327b3c30df4c8cb26 (patch)
tree1b7bd89fdcfd01715713d8a15db471dc75a96bbf /2.3-1/src/c/statisticsFunctions/stdevf/crowstdevfa.c
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Original Version
Diffstat (limited to '2.3-1/src/c/statisticsFunctions/stdevf/crowstdevfa.c')
-rw-r--r--2.3-1/src/c/statisticsFunctions/stdevf/crowstdevfa.c59
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diff --git a/2.3-1/src/c/statisticsFunctions/stdevf/crowstdevfa.c b/2.3-1/src/c/statisticsFunctions/stdevf/crowstdevfa.c
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+/*
+ * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ * Copyright (C) 2008-2008 - INRIA - Allan SIMON
+ *
+ * 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 "stdevf.h"
+#include "meanf.h"
+#include "abs.h"
+
+
+void crowstdevfa(floatComplex *in1, int lines, int columns, floatComplex*in2, floatComplex* out){
+ int i = 0;
+ int j = 0;
+ floatComplex temp = FloatComplex(0.0f,0.0f);
+ floatComplex accumulate = FloatComplex(0.0f,0.0f);
+ floatComplex accumulateFre = FloatComplex(0.0f,0.0f);
+
+ crowmeanfa(in1, lines, columns, in2, out );
+
+ /*we first multiply each cell of the input matrix by its coefficient*/
+ for (j = 0; j < columns; ++j)
+ {
+ accumulate = FloatComplex(0.0f,0.0f);
+ accumulateFre =FloatComplex(0.0f,0.0f);
+ temp = FloatComplex(0.0f,0.0f);
+
+ for ( i = 0 ; i < lines; ++i )
+ {
+
+ temp = cpows ( cdiffs (in1[lines*j + i] ,out[j] ) ,FloatComplex (2.0f, 0.0f ) );
+ temp = cmuls( in2[lines*j + i] , temp);
+
+ accumulate = cadds( temp , accumulate);
+ accumulateFre = cadds (in2[lines*j + i] ,accumulateFre );
+
+ }
+
+ if (lines <= 1)
+ {
+ out[j] = cmuls (FloatComplex(0.0f,0.0f) , accumulate ) ;
+ }
+ else
+ {
+ if( sabss (creals(accumulate)) <= 3e-6 ) accumulate = FloatComplex(sabss(creals(accumulate)) ,cimags(accumulate));
+ if( sabss (cimags(accumulate)) <= 3e-6 ) accumulate = FloatComplex(creals(accumulate) ,sabss(cimags(accumulate)));
+ accumulate = crdivs (accumulate , cdiffs (accumulateFre ,FloatComplex(1.0f,0.0f)) );
+ out[j] =csqrts(accumulate);
+ }
+ }
+
+}