From db464f35f5a10b58d9ed1085e0b462689adee583 Mon Sep 17 00:00:00 2001
From: Siddhesh Wani
Date: Mon, 25 May 2015 14:46:31 +0530
Subject: Original Version
---
src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c | 69 +++++++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c
(limited to 'src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c')
diff --git a/src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c b/src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c
new file mode 100644
index 00000000..a6220d57
--- /dev/null
+++ b/src/c/statisticsFunctions/stdevf/dcolumnstdevfa.c
@@ -0,0 +1,69 @@
+/*
+ * 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"
+
+
+void dcolumnstdevfa(double *in1, int lines, int columns, double *in2, double* out){
+ int i = 0;
+ int j = 0;
+ double temp = 0.0;
+ double accumulate = 0.0;
+ double accumulateFre = 0.0 ;
+
+ dcolumnmeanfa(in1, lines, columns, in2, out );
+
+
+ /*we first multiply each cell of the input matrix by its coefficient*/
+ for (j = 0; j < lines; ++j)
+ {
+ accumulate = 0.0;
+ accumulateFre= 0.0;
+ temp = 0.0;
+
+ for ( i = 0 ; i < columns; ++i )
+ {
+ temp = dpows ( (in1[lines*i + j] - out[j] ) ,2 );
+ temp *= in2[lines*i + j];
+
+ accumulate += temp ;
+ accumulateFre += in2[lines*i + j];
+ }
+
+ if (lines <= 1)
+ {
+ out[j] = 0.0 * accumulate ;
+ }
+ else
+ {
+ out[j] = dsqrts(accumulate / (accumulateFre - 1));
+ }
+ }
+
+}
+/*
+
+ !
+! elseif o == 'c' | o == 2 then !
+! // here ones is used becaue we work on matrix , but in C we work on element so we only need iteratation !
+! y = x - meanf(x, fre, o) * ones(1, size(x, o)) !
+! !
+
+! if size(x, 1) == 1 then ! !
+! s = 0 * sum(y.^2 .* fre, o) !
+! else ! !
+! s = sqrt(sum(y.^2 .* fre, o) ./ (sum(fre, o) - 1)); !
+ !
+*/
+
--
cgit