NEW FEATURES AND NEW FUNCTIONS

1 files changed, 81 insertions, 0 deletions

diff --git a/src/c/matrixOperations/flipdim/dflipdima.c b/src/c/matrixOperations/flipdim/dflipdima.c
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+++ b/src/c/matrixOperations/flipdim/dflipdima.c
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+/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+
+ 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
+ Author: Siddhesh Wani
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+ 
+/*Function flips the input matrix along given dimension*/
+
+#include "flipdim.h"
+
+void dflipdima (double *in, int row, int col, int dim, int blk_size, double *out)
+{
+	int col_count = 0, row_count = 0, blk_count = 0, count = 0;
+	if(dim == 1) /*flip rows*/
+	{
+		if(blk_size == 1)
+		{
+			for(col_count = 0; col_count < col; col_count++)
+			{
+				for(row_count = 0; row_count< row;row_count++)
+				{
+					out[col_count*row+row_count] = in[col_count*row+(row - row_count - 1)];
+				}
+			}
+		}
+		else /*block size is more than 1*/
+		{
+			for(col_count = 0; col_count < col; col_count++)
+			{
+				count = blk_size;
+				blk_count = 0;
+				for(row_count = 0; row_count< row;row_count++)
+				{
+					out[col_count*row+row_count] = in[col_count*row+(row - blk_count*blk_size - count)];
+					if(--count == 0)
+					{
+						blk_count += 1;
+						count = blk_size;
+					}
+				}
+			}
+			
+		}
+	}
+	else if(dim == 2) /*flip columns*/
+	{
+		if(blk_size == 1)
+		{
+			for(col_count = 0; col_count < col; col_count++)
+			{
+				for(row_count = 0; row_count< row;row_count++)
+				{
+					out[col_count*row+row_count] = in[(col- col_count - 1)*row+row_count];
+				}
+			}
+		}
+		else
+		{
+			count = blk_size;
+			blk_count = 0;
+			for(col_count = 0; col_count < col; col_count++)
+			{
+				for(row_count = 0; row_count< row;row_count++)
+				{
+					out[col_count*row+row_count] = in[(col - blk_count*blk_size - count)*row+row_count];
+				}
+				if(--count == 0)
+				{
+					count = blk_size;
+					blk_count += 1;
+				}
+			}	
+		}
+	}
+}
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