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<title>SuperLU: SRC/zpivotgrowth.c File Reference</title>
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    SRC/zpivotgrowth.c File Reference

    Computes the reciprocal pivot growth factor. More...
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    #include <math.h>
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    #include "slu_zdefs.h"
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    Functions

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    double zPivotGrowth (int ncols, SuperMatrix *A, int *perm_c, SuperMatrix *L, SuperMatrix *U)
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    Detailed Description

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     -- SuperLU routine (version 2.0) --
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     Univ. of California Berkeley, Xerox Palo Alto Research Center,
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     and Lawrence Berkeley National Lab.
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     November 15, 1997
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    Function Documentation

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              double zPivotGrowth           
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              (
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              int 
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               ncols, 
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              SuperMatrix
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               A, 
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              int * 
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               perm_c, 
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              SuperMatrix
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               L, 
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              SuperMatrix
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               U 
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              )
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     Purpose
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     =======

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     Compute the reciprocal pivot growth factor of the leading ncols columns
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     of the matrix, using the formula:
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         min_j ( max_i(abs(A_ij)) / max_i(abs(U_ij)) )

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     Arguments
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     =========

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     ncols    (input) int
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              The number of columns of matrices A, L and U.

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     A        (input) SuperMatrix*
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    	    Original matrix A, permuted by columns, of dimension
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              (A->nrow, A->ncol). The type of A can be:
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              Stype = NC; Dtype = SLU_Z; Mtype = GE.

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     L        (output) SuperMatrix*
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              The factor L from the factorization Pr*A=L*U; use compressed row 
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              subscripts storage for supernodes, i.e., L has type: 
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              Stype = SC; Dtype = SLU_Z; Mtype = TRLU.

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     U        (output) SuperMatrix*
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    	    The factor U from the factorization Pr*A*Pc=L*U. Use column-wise
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              storage scheme, i.e., U has types: Stype = NC;
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              Dtype = SLU_Z; Mtype = TRU.
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    <address style="text-align: right;"><small>Generated on Mon Nov 22 10:23:48 2010 for SuperLU by </small></address>
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