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/* ========================================================================== */
/* === umfpack_scale ======================================================== */
/* ========================================================================== */
/* -------------------------------------------------------------------------- */
/* UMFPACK Copyright (c) Timothy A. Davis, CISE, */
/* Univ. of Florida. All Rights Reserved. See ../Doc/License for License. */
/* web: http://www.cise.ufl.edu/research/sparse/umfpack */
/* -------------------------------------------------------------------------- */
int umfpack_di_scale
(
double X [ ],
const double B [ ],
void *Numeric
) ;
UF_long umfpack_dl_scale
(
double X [ ],
const double B [ ],
void *Numeric
) ;
int umfpack_zi_scale
(
double Xx [ ], double Xz [ ],
const double Bx [ ], const double Bz [ ],
void *Numeric
) ;
UF_long umfpack_zl_scale
(
double Xx [ ], double Xz [ ],
const double Bx [ ], const double Bz [ ],
void *Numeric
) ;
/*
double int Syntax:
#include "umfpack.h"
void *Numeric ;
double *B, *X ;
status = umfpack_di_scale (X, B, Numeric) ;
double UF_long Syntax:
#include "umfpack.h"
void *Numeric ;
double *B, *X ;
status = umfpack_dl_scale (X, B, Numeric) ;
complex int Syntax:
#include "umfpack.h"
void *Numeric ;
double *Bx, *Bz, *Xx, *Xz ;
status = umfpack_zi_scale (Xx, Xz, Bx, Bz, Numeric) ;
complex UF_long Syntax:
#include "umfpack.h"
void *Numeric ;
double *Bx, *Bz, *Xx, *Xz ;
status = umfpack_zl_scale (Xx, Xz, Bx, Bz, Numeric) ;
packed complex Syntax:
Same as above, except both Xz and Bz are NULL.
Purpose:
Given LU factors computed by umfpack_*_numeric (PAQ=LU, PRAQ=LU, or
P(R\A)Q=LU), and a vector B, this routine computes X = B, X = R*B, or
X = R\B, as appropriate. X and B must be vectors equal in length to the
number of rows of A.
Returns:
The status code is returned. UMFPACK_OK is returned if successful.
UMFPACK_ERROR_invalid_Numeric_object is returned in the Numeric
object is invalid. UMFPACK_ERROR_argument_missing is returned if
any of the input vectors are missing (X and B for the real version,
and Xx and Bx for the complex version).
Arguments:
double X [n_row] ; Output argument.
or:
double Xx [n_row] ; Output argument, real part.
Size 2*n_row for packed complex case.
double Xz [n_row] ; Output argument, imaginary part.
The output vector X. If either Xz or Bz are NULL, the vector
X is in packed complex form, with the kth entry in Xx [2*k] and
Xx [2*k+1], and likewise for B.
double B [n_row] ; Input argument, not modified.
or:
double Bx [n_row] ; Input argument, not modified, real part.
Size 2*n_row for packed complex case.
double Bz [n_row] ; Input argument, not modified, imaginary part.
The input vector B. See above if either Xz or Bz are NULL.
void *Numeric ; Input argument, not modified.
Numeric must point to a valid Numeric object, computed by
umfpack_*_numeric.
*/
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