diff options
Diffstat (limited to '2.3-1/src/c/statisticsFunctions/prod/zrowproda.c')
-rw-r--r-- | 2.3-1/src/c/statisticsFunctions/prod/zrowproda.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/2.3-1/src/c/statisticsFunctions/prod/zrowproda.c b/2.3-1/src/c/statisticsFunctions/prod/zrowproda.c new file mode 100644 index 00000000..84a16903 --- /dev/null +++ b/2.3-1/src/c/statisticsFunctions/prod/zrowproda.c @@ -0,0 +1,37 @@ +/* + * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab + * Copyright (C) 2008-2008 - INRIA - Arnaud TORSET + * + * 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 + * + */ + +/* This is a copy/paste with adaptation from sum */ + +#include "prod.h" +#include "multiplication.h" + +void zrowproda(doubleComplex *in, int lines, int columns, doubleComplex * out) { + int i = 0; + + /* + ** First assign first row, just in case + ** out contains non-zero's elements. + */ + for (i = 0 ; i < columns; ++i) + { + out[i] = in[i * lines]; + } + /* + ** Then accumulate in each column. + */ + for (i = 1 ; i <= (lines - 1) * columns ; ++i) + { + out[(i - 1) % columns] = zmuls( out[(i - 1) % columns] , + in[((i - 1) % columns) * lines + 1 + (i - 1) / columns]); + } +} |