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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/prod/drowproda.c
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Original Version
Diffstat (limited to '2.3-1/src/c/statisticsFunctions/prod/drowproda.c')
-rw-r--r--2.3-1/src/c/statisticsFunctions/prod/drowproda.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/2.3-1/src/c/statisticsFunctions/prod/drowproda.c b/2.3-1/src/c/statisticsFunctions/prod/drowproda.c
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+/*
+ * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ * Copyright (C) 2008-2008 - INRIA - Arnaud TORSET
+ *
+ * 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
+ *
+ */
+
+/* This is a copy/paste with adaptation from sum */
+
+#include "prod.h"
+
+void drowproda(double *in, int lines, int columns, double * out) {
+ int i = 0;
+
+ /*
+ ** First assign first row, just in case
+ ** out contains non-zero's elements.
+ */
+ for (i = 0 ; i < columns; ++i)
+ {
+ out[i] = in[i * lines];
+ }
+ /*
+ ** Then accumulate in each column.
+ */
+ for (i = 1 ; i <= (lines - 1) * columns ; ++i)
+ {
+ out[(i - 1) % columns] *= in[((i - 1) % columns) * lines + 1 + (i - 1) / columns];
+ }
+}