From 277d1edfa17bf3719d90ddbac8e31f6181e952c3 Mon Sep 17 00:00:00 2001
From: Sandeep Gupta
Date: Sun, 18 Jun 2017 23:55:40 +0530
Subject: First commit
---
src/c/statisticsFunctions/stdevf/zstdevfzd.c | 41 ++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 src/c/statisticsFunctions/stdevf/zstdevfzd.c
(limited to 'src/c/statisticsFunctions/stdevf/zstdevfzd.c')
diff --git a/src/c/statisticsFunctions/stdevf/zstdevfzd.c b/src/c/statisticsFunctions/stdevf/zstdevfzd.c
new file mode 100644
index 00000000..f7a28e30
--- /dev/null
+++ b/src/c/statisticsFunctions/stdevf/zstdevfzd.c
@@ -0,0 +1,41 @@
+/*
+ * 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"
+
+doubleComplex zstdevfzd(doubleComplex *in1, int lines, int columns, double* in2)
+{
+ int i = 0 ;
+ doubleComplex temp = DoubleComplex(0.0,0.0);
+ doubleComplex accumulate = DoubleComplex(0.0,0.0);
+ double accumulateFre = 0.0 ;
+ doubleComplex meanf = zmeanfzd (in1 , lines , columns , in2);
+/*equivalent to (in1 - meanf(x , in2 )).^2 .*in2 */
+ for(i = 0 ; i < lines*columns ; ++i)
+ {
+ temp = zpows ( zdiffs (in1[i] , meanf ) ,DoubleComplex (2.0, 0.0 ) );
+ temp = zmuls( DoubleComplex(in2[i],0.0f) , temp);
+
+ accumulate = zadds( temp , accumulate);
+ accumulateFre += in2[i];
+ }
+
+ if (lines <= 1)
+ {
+ return zmuls (DoubleComplex(0.0,0.0) , accumulate ) ;
+ }
+ else
+ {
+ accumulate = DoubleComplex( zreals(accumulate ) / (accumulateFre - 1) , zimags(accumulate) / (accumulateFre - 1));
+ return zsqrts(accumulate);
+ }
+}
--
cgit