zgesc2.f - Man Page
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 (integer N, complex*16, dimension( lda, * ) A, integer LDA, complex*16, dimension( * ) RHS, integer, dimension( * ) IPIV, integer, dimension( * ) JPIV, double precision SCALE)
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
Univ. of Colorado Denver
NAG Ltd.
- Date:
November 2017
- Contributors:
Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.
Definition at line 117 of file zgesc2.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Referenced By
The man page zgesc2(3) is an alias of zgesc2.f(3).
Tue Nov 14 2017 Version 3.8.0 LAPACK