Blame thirdparty/superlu/SuperLU_4.1/DOC/html/ilu__zpivotL_8c.html
a513242252df978151124f80760f7e00758a7a90
kusano
7d535a kusano
7d535a <meta content="text/html;charset=UTF-8" http-equiv="Content-Type">kusano
7d535a <title>SuperLU: SRC/ilu_zpivotL.c File Reference</title>kusano
7d535a <link href="doxygen.css" rel="stylesheet" type="text/css">kusano
7d535a <link href="tabs.css" rel="stylesheet" type="text/css">kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a
kusano
7d535a kusano
7d535a Main Page kusano
7d535a Data Structures kusano
7d535a Files kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a SRC/ilu_zpivotL.c File Reference Performs numerical pivoting. More... kusano
7d535a
kusano
7d535a #include <math.h>kusano
7d535a #include <stdlib.h>kusano
7d535a #include "slu_zdefs.h "kusano
7d535a kusano
7d535a kusano
7d535a Defines kusano
7d535a #define SGN (x) ((x)>=0?1:-1)kusano
7d535a kusano
7d535a Functions kusano
7d535a int ilu_zpivotL (const int jcol, const double u, int *usepr, int *perm_r, int diagind, int *swap, int *iswap, int *marker, int *pivrow, double fill_tol, milu_t milu, doublecomplex drop_sum, GlobalLU_t *Glu, SuperLUStat_t *stat)kusano
7d535a kusano
7d535a kusano
7d535a Detailed Description kusano
7d535a kusano
7d535a -- SuperLU routine (version 4.0) --kusano
7d535a Lawrence Berkeley National Laboratorykusano
7d535a June 30, 2009kusano
7d535a Define Documentation kusano
7d535a kusano
7d535a
kusano
7d535a
kusano
7d535a kusano
7d535a kusano
7d535a #define SGN kusano
7d535a (kusano
7d535a x kusano
7d535a kusano
7d535a ) kusano
7d535a ((x)>=0?1:-1)kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a kusano
7d535a
kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a Function Documentation kusano
7d535a kusano
7d535a
kusano
7d535a
kusano
7d535a kusano
7d535a kusano
7d535a int ilu_zpivotL kusano
7d535a (kusano
7d535a const int kusano
7d535a jcol , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a const double kusano
7d535a u , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a usepr , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a perm_r , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int kusano
7d535a diagind , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a swap , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a iswap , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a marker , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a int * kusano
7d535a pivrow , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a double kusano
7d535a fill_tol , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a milu_t kusano
7d535a milu , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a doublecomplex kusano
7d535a drop_sum , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a GlobalLU_t * kusano
7d535a Glu , kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a SuperLUStat_t * kusano
7d535a stat kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a )kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a kusano
7d535a
kusano
7d535a kusano
7d535a Purposekusano
7d535a =======kusano
7d535a Performs the numerical pivoting on the current column of L,kusano
7d535a and the CDIV operation.
kusano
7d535a Pivot policy: kusano
7d535a (1) Compute thresh = u * max_(i>=j) abs(A_ij) ;kusano
7d535a (2) IF user specifies pivot row k and abs(A_kj) >= thresh THENkusano
7d535a pivot row = k;kusano
7d535a ELSE IF abs(A_jj) >= thresh THENkusano
7d535a pivot row = j;kusano
7d535a ELSEkusano
7d535a pivot row = m;
kusano
7d535a Note: If you absolutely want to use a given pivot order, then set u=0.0.
kusano
7d535a Return value: 0 success; kusano
7d535a i > 0 U(i,i) is exactly zero.kusano
7d535a kusano
7d535a kusano
7d535a
kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a kusano
7d535a
1.5.5