# dgesc2(3) [centos man page]

```dgesc2.f(3)							      LAPACK							       dgesc2.f(3)

NAME
dgesc2.f -

SYNOPSIS
Functions/Subroutines
subroutine dgesc2 (N, A, LDA, RHS, IPIV, JPIV, SCALE)
DGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

Function/Subroutine Documentation
subroutine dgesc2 (integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )RHS, integer, dimension( *
)IPIV, integer, dimension( * )JPIV, double precisionSCALE)
DGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

Purpose:

DGESC2 solves a system of linear equations

A * X = scale* RHS

with a general N-by-N matrix A using the LU factorization with
complete pivoting computed by DGETC2.

Parameters:
N

N is INTEGER
The order of the matrix A.

A

A is DOUBLE PRECISION array, dimension (LDA,N)
On entry, the  LU part of the factorization of the n-by-n
matrix A computed by DGETC2:  A = P * L * U * Q

LDA

LDA is INTEGER
The leading dimension of the array A.  LDA >= max(1, N).

RHS

RHS is DOUBLE PRECISION array, dimension (N).
On entry, the right hand side vector b.
On exit, the solution vector X.

IPIV

IPIV is INTEGER array, dimension (N).
The pivot indices; for 1 <= i <= N, row i of the
matrix has been interchanged with row IPIV(i).

JPIV

JPIV is INTEGER array, dimension (N).
The pivot indices; for 1 <= j <= N, column j of the
matrix has been interchanged with column JPIV(j).

SCALE

SCALE is DOUBLE PRECISION
On exit, SCALE contains the scale factor. SCALE is chosen
0 <= SCALE <= 1 to prevent owerflow in the solution.

Author:
Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:
September 2012

Contributors:
Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.

Definition at line 115 of file dgesc2.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       dgesc2.f(3)```

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```zgesc2.f(3)							      LAPACK							       zgesc2.f(3)

NAME
zgesc2.f -

SYNOPSIS
Functions/Subroutines
subroutine zgesc2 (N, A, LDA, RHS, IPIV, JPIV, SCALE)
ZGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

Function/Subroutine Documentation
subroutine zgesc2 (integerN, complex*16, dimension( lda, * )A, integerLDA, complex*16, dimension( * )RHS, integer, dimension( * )IPIV, integer,
dimension( * )JPIV, double precisionSCALE)
ZGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

Purpose:

ZGESC2 solves a system of linear equations

A * X = scale* RHS

with a general N-by-N matrix A using the LU factorization with
complete pivoting computed by ZGETC2.

Parameters:
N

N is INTEGER
The number of columns of the matrix A.

A

A is COMPLEX*16 array, dimension (LDA, N)
On entry, the  LU part of the factorization of the n-by-n
matrix A computed by ZGETC2:  A = P * L * U * Q

LDA

LDA is INTEGER
The leading dimension of the array A.  LDA >= max(1, N).

RHS

RHS is COMPLEX*16 array, dimension N.
On entry, the right hand side vector b.
On exit, the solution vector X.

IPIV

IPIV is INTEGER array, dimension (N).
The pivot indices; for 1 <= i <= N, row i of the
matrix has been interchanged with row IPIV(i).

JPIV

JPIV is INTEGER array, dimension (N).
The pivot indices; for 1 <= j <= N, column j of the
matrix has been interchanged with column JPIV(j).

SCALE

SCALE is DOUBLE PRECISION
On exit, SCALE contains the scale factor. SCALE is chosen
0 <= SCALE <= 1 to prevent owerflow in the solution.

Author:
Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:
September 2012

Contributors:
Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.

Definition at line 116 of file zgesc2.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       zgesc2.f(3)```
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