1 // Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
2 // Copyright (C) INRIA -
4 // This file must be used under the terms of the CeCILL.
5 // This source file is licensed as described in the file COPYING, which
6 // you should have received as part of this distribution. The terms
7 // are also available at
8 // http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
10 function X = sylv(A,B,C,flag)
11 // solve A*X+X*B=C if flag=='c' or A*X*B-X=C if flag=='d'
13 error(msprintf(gettext("%s: Wrong number of input argument(s): %d expected.\n"),"sylv",4))
15 if size(A,1)<> size(A,2) then
16 error(msprintf(gettext("%s: Wrong size for input argument #%d: A square matrix expected.\n"), "sylv", 1));
18 if size(B,1)<> size(B,2) then
19 error(msprintf(gettext("%s: Wrong size for input argument #%d: A square matrix expected.\n"), "sylv", 2));
21 if size(C,1)<> size(A,1) then
22 error(msprintf(gettext("%s: Incompatible input arguments #%d and #%d: Same number of rows expected.\n"),"sylv",1,3))
24 if size(C,2)<> size(B,2) then
25 error(msprintf(gettext("%s: Incompatible input arguments #%d and #%d: Same number of columns expected.\n"),"sylv",2,3))
33 error(msprintf(gettext("%s: Wrong value for input argument #%d: ""c"" or ""d"" expected.\n"), "sylv", 4));
35 X=linmeq(1,A,B,C,flag)