SIGN_REVERSE - elementwise sign reversal

This procedure implements a sign reversal on the specified block of elements.

Usage

The SIGN_REVERSE stored procedure has the following syntax:
SIGN_REVERSE(matrixIn,matrixOut,row_start,col_start,row_stop,col_stop)
Parameters
matrixIn
The name of the input matrix.
Type: NVARCHAR(ANY)
matrixOut
The name of the output matrix.
Type: NVARCHAR(ANY)
row_start
The first row of the input matrix to use.
Type: INT4
col_start
The first column of the input matrix to use.
Type: INT4
row_stop
The last row of the input matrix to use.
Type: INT4
col_stop
The last column of the input matrix to use.
Type: INT4
Returns
BOOLEAN TRUE, if successful.

Examples

call nzm..shape('1,2,3,4,5,0,6,7,8,9',4,4,'A');
call nzm..sign_reverse('A','B',2,2,3,3);
call nzm..print('A');
call nzm..print('B');
call nzm..delete_matrix('A');
call nzm..delete_matrix('B');

 SHAPE
-------
 t
(1 row)

 SIGN_REVERSE
--------------
 t
(1 row)

                            PRINT
-------------------------------------------------------------
 -- matrix: A --
 1, 2, 3, 4
 5, 0, 6, 7
 8, 9, 1, 2
 3, 4, 5, 0
(1 row)

                               PRINT
-----------------------------------------------------------------
 -- matrix: B --
 1, 2, 3, 4
 5, -0, -6, 7
 8, -9, -1, 2
 3, 4, 5, 0
(1 row)

 DELETE_MATRIX
---------------
 t
(1 row)

 DELETE_MATRIX
---------------
 t
(1 row)