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Diffstat (limited to 'src/c/matrixOperations/triu/striua.c')
| -rw-r--r-- | src/c/matrixOperations/triu/striua.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/c/matrixOperations/triu/striua.c b/src/c/matrixOperations/triu/striua.c new file mode 100644 index 0000000..8ec779e --- /dev/null +++ b/src/c/matrixOperations/triu/striua.c @@ -0,0 +1,35 @@ +/* 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 striua (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; + } + } + } +}
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