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| SRC/lapack_64_obj/sgesc2.f(3) | Library Functions Manual | SRC/lapack_64_obj/sgesc2.f(3) | 
NAME¶
SRC/lapack_64_obj/sgesc2.f
SYNOPSIS¶
Functions/Subroutines¶
subroutine SGESC2 (n, a, lda, rhs, ipiv, jpiv, scale)
  
  SGESC2 solves a system of linear equations using the LU factorization
    with complete pivoting computed by sgetc2.
  
Function/Subroutine Documentation¶
subroutine SGESC2 (integer n, real, dimension( lda, * ) a, integer lda, real, dimension( * ) rhs, integer, dimension( * ) ipiv, integer, dimension( * ) jpiv, real scale)¶
SGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.
Purpose:
!> !> SGESC2 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 SGETC2. !>
Parameters
N
!> N is INTEGER !> The order of the matrix A. !>
A
!> A is REAL array, dimension (LDA,N) !> On entry, the LU part of the factorization of the n-by-n !> matrix A computed by SGETC2: A = P * L * U * Q !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1, N). !>
RHS
!> RHS is REAL 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 REAL !> On exit, SCALE contains the scale factor. SCALE is chosen !> 0 <= SCALE <= 1 to prevent overflow in the solution. !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Contributors:
Bo Kagstrom and Peter Poromaa, Department of Computing
  Science, Umea University, S-901 87 Umea, Sweden.
Definition at line 114 of file sgesc2.f.
Author¶
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