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-rw-r--r--src/c/matrixOperations/tril/dtrila.c33
-rw-r--r--src/c/matrixOperations/tril/i16trila.c34
-rw-r--r--src/c/matrixOperations/tril/i8trila.c34
-rw-r--r--src/c/matrixOperations/tril/strila.c34
-rw-r--r--src/c/matrixOperations/tril/u16trila.c33
-rw-r--r--src/c/matrixOperations/tril/u8trila.c34
6 files changed, 202 insertions, 0 deletions
diff --git a/src/c/matrixOperations/tril/dtrila.c b/src/c/matrixOperations/tril/dtrila.c
new file mode 100644
index 0000000..b727e5c
--- /dev/null
+++ b/src/c/matrixOperations/tril/dtrila.c
@@ -0,0 +1,33 @@
+// 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 to extract lower triagular entries from given matrix
+#include "triu.h"
+
+void dtrila (double *in, int row, int column, double diag, double *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
diff --git a/src/c/matrixOperations/tril/i16trila.c b/src/c/matrixOperations/tril/i16trila.c
new file mode 100644
index 0000000..e17b361
--- /dev/null
+++ b/src/c/matrixOperations/tril/i16trila.c
@@ -0,0 +1,34 @@
+// 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 to extract lower triagular entries from given matrix
+
+#include "triu.h"
+
+void i16trila (int16 *in, int row, int column, double diag, int16 *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
diff --git a/src/c/matrixOperations/tril/i8trila.c b/src/c/matrixOperations/tril/i8trila.c
new file mode 100644
index 0000000..a91594a
--- /dev/null
+++ b/src/c/matrixOperations/tril/i8trila.c
@@ -0,0 +1,34 @@
+// 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 to extract lower triagular entries from given matrix
+
+#include "triu.h"
+
+void i8trila (int8 *in, int row, int column, double diag, int8 *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
diff --git a/src/c/matrixOperations/tril/strila.c b/src/c/matrixOperations/tril/strila.c
new file mode 100644
index 0000000..f588089
--- /dev/null
+++ b/src/c/matrixOperations/tril/strila.c
@@ -0,0 +1,34 @@
+// 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 to extract lower triagular entries from given matrix
+
+#include "triu.h"
+
+void strila (float *in, int row, int column, double diag, float *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
diff --git a/src/c/matrixOperations/tril/u16trila.c b/src/c/matrixOperations/tril/u16trila.c
new file mode 100644
index 0000000..d697418
--- /dev/null
+++ b/src/c/matrixOperations/tril/u16trila.c
@@ -0,0 +1,33 @@
+// 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 to extract lower triagular entries from given matrix
+#include "triu.h"
+
+void u16trila (uint16 *in, int row, int column, double diag, uint16 *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
diff --git a/src/c/matrixOperations/tril/u8trila.c b/src/c/matrixOperations/tril/u8trila.c
new file mode 100644
index 0000000..ebc4d72
--- /dev/null
+++ b/src/c/matrixOperations/tril/u8trila.c
@@ -0,0 +1,34 @@
+// 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 to extract lower triagular entries from given matrix
+
+#include "triu.h"
+
+void u8trila (uint8 *in, int row, int column, double diag, uint8 *out)
+{
+ int row_counter, col_counter = 0;
+
+ for(row_counter=0; row_counter < row; row_counter++)
+ {
+ for(col_counter=0; col_counter < column; col_counter++)
+ {
+ if((double)(row_counter + diag) >= (double)col_counter)
+ {
+ out[col_counter*row+row_counter] = in[col_counter*row+row_counter];
+ }
+ else
+ {
+ out[col_counter*row+row_counter] = 0;
+ }
+ }
+ }
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-01-26 06:09:43 +0000