diff options
Diffstat (limited to '2.3-1/src/c/matrixOperations/division/zldivma.c')
-rw-r--r-- | 2.3-1/src/c/matrixOperations/division/zldivma.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/2.3-1/src/c/matrixOperations/division/zldivma.c b/2.3-1/src/c/matrixOperations/division/zldivma.c new file mode 100644 index 00000000..85577351 --- /dev/null +++ b/2.3-1/src/c/matrixOperations/division/zldivma.c @@ -0,0 +1,125 @@ +/* + * 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 <stdlib.h> +#include <string.h> +#include "matrixDivision.h" +#include "lapack.h" + +void zldivma( doubleComplex* in1, int lines1, int columns1 , + doubleComplex* in2, int lines2, int columns2 , + doubleComplex* out ) +{ + + + char cNorm = 0; + int iExit = 0; + + /*temporary variables*/ + int iWork = 0; + int iInfo = 0; + int iMax = 0; + int iRank = 0; + + double dblRcond = 0; + + double dblEps = 0; + double dblAnorm = 0; + + doubleComplex *pAf = NULL; + doubleComplex *pXb = NULL; + doubleComplex *pDwork = NULL; + + + double *pRwork = NULL; + + + int *pIpiv = NULL; + int *pJpvt = NULL; + + iWork = max(2*columns2, min(lines2, columns2) + max(2 * min(lines2, columns2), max(lines2 + 1, min(lines2, columns2) + lines1))); + + + + /* Array allocations*/ + + + pAf = (doubleComplex*)malloc(sizeof(doubleComplex) *(unsigned int) lines1 *(unsigned int)columns1); + pXb = (doubleComplex*)malloc(sizeof(doubleComplex) *(unsigned int) max(lines1,columns1) *(unsigned int) columns2); + + + pIpiv = (int*)malloc(sizeof(int) * (unsigned int)columns1); + pJpvt = (int*)malloc(sizeof(int) * (unsigned int)columns1); + pRwork = (double*)malloc(sizeof(double) * (unsigned int)columns1*2); + + + cNorm = '1'; + pDwork = (doubleComplex*)malloc(sizeof(doubleComplex) * (unsigned int)iWork); + dblEps = getRelativeMachinePrecision() ; + dblAnorm = C2F(zlange)(&cNorm, &lines1, &columns1, in1, &lines1, pDwork); + + if(lines1 == columns1) + { + cNorm = 'F'; + C2F(zlacpy)(&cNorm, &columns1, &columns1, in1, &columns1, pAf, &columns1); + + C2F(zlacpy)(&cNorm, &columns1, &columns2, in2, &columns1, pXb, &columns1); + C2F(zgetrf)(&columns1, &columns1, pAf, &columns1, pIpiv, &iInfo); + if(iInfo == 0) + { + cNorm = '1'; + C2F(zgecon)(&cNorm, &columns1, pAf, &columns1, &dblAnorm, &dblRcond, pDwork, pRwork, &iInfo); + if(dblRcond > sqrt(dblEps)) + { + cNorm = 'N'; + C2F(zgetrs)(&cNorm, &columns1, &columns2, pAf, &columns1, pIpiv, pXb, &columns1, &iInfo); + cNorm = 'F'; + C2F(zlacpy)(&cNorm, &columns1, &columns2, pXb, &columns1, out, &columns1); + + iExit = 1; + } + + } + } + + if(iExit == 0) + { + dblRcond = sqrt(dblEps); + cNorm = 'F'; + iMax = max(lines1, columns1); + C2F(zlacpy)(&cNorm, &lines1, &columns2, in2, &lines1, pXb, &iMax); + memset(pJpvt, 0x00,(unsigned int) sizeof(int) * (unsigned int)columns1); + C2F(zgelsy)( &lines1, &columns1, &columns2, in1, &lines1, pXb, &iMax, + pJpvt, &dblRcond, &iRank, pDwork, &iWork, pRwork, &iInfo); + + + if(iInfo == 0) + { + + cNorm = 'F'; + C2F(zlacpy)(&cNorm, &columns1, &columns2, pXb, &iMax, out, &columns1); + + } + } + + + + + + free(pAf); + free(pXb); + free(pIpiv); + free(pJpvt); + free(pRwork); + free(pDwork); + +} |