diff options
Diffstat (limited to '2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c')
-rw-r--r-- | 2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c b/2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c new file mode 100644 index 00000000..4f4871c6 --- /dev/null +++ b/2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c @@ -0,0 +1,35 @@ +/* + * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab + * Copyright (C) 2008-2008 - INRIA - Allan SIMON + * + * 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 + * + */ + +#include "variancef.h" +#include "division.h" + +floatComplex cvariancefa(floatComplex *in1, int size, floatComplex *in2) + +{ + int i = 0 ; + floatComplex temp = FloatComplex (0.0f, 0.0f ); + floatComplex accumulate =FloatComplex (0.0f, 0.0f ); + floatComplex accumulateFre = FloatComplex (0.0f, 0.0f ); + + floatComplex meanf = cmeanfa (in1 , size , in2); + + for(i = 0 ; i < size ; ++i) + { + temp = cpows ( cdiffs (in1[i] , meanf ) ,FloatComplex (2.0f, 0.0f ) ); + temp = cmuls( in2[i] , temp); + + accumulate = cadds( temp , accumulate); + accumulateFre = cadds (in2[i] ,accumulateFre ); + } + return crdivs (accumulate , cdiffs (accumulateFre ,FloatComplex(1.0f,0.0f)) ); +} |