cgelqs.f - Man Page
SRC/DEPRECATED/cgelqs.f
Synopsis
Functions/Subroutines
subroutine cgelqs (m, n, nrhs, a, lda, tau, b, ldb, work, lwork, info)
CGELQS
Function/Subroutine Documentation
subroutine cgelqs (integer m, integer n, integer nrhs, complex, dimension( lda, * ) a, integer lda, complex, dimension( * ) tau, complex, dimension( ldb, * ) b, integer ldb, complex, dimension( lwork ) work, integer lwork, integer info)
CGELQS
Purpose:
Compute a minimum-norm solution min || A*X - B || using the LQ factorization A = L*Q computed by CGELQF.
- Parameters
M
M is INTEGER The number of rows of the matrix A. M >= 0.
N
N is INTEGER The number of columns of the matrix A. N >= M >= 0.
NRHS
NRHS is INTEGER The number of columns of B. NRHS >= 0.
A
A is COMPLEX array, dimension (LDA,N) Details of the LQ factorization of the original matrix A as returned by CGELQF.
LDA
LDA is INTEGER The leading dimension of the array A. LDA >= M.
TAU
TAU is COMPLEX array, dimension (M) Details of the orthogonal matrix Q.
B
B is COMPLEX array, dimension (LDB,NRHS) On entry, the m-by-nrhs right hand side matrix B. On exit, the n-by-nrhs solution matrix X.
LDB
LDB is INTEGER The leading dimension of the array B. LDB >= N.
WORK
WORK is COMPLEX array, dimension (LWORK)
LWORK
LWORK is INTEGER The length of the array WORK. LWORK must be at least NRHS, and should be at least NRHS*NB, where NB is the block size for this environment.
INFO
INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value
- Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 119 of file cgelqs.f.
Author
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Referenced By
The man page cgelqs(3) is an alias of cgelqs.f(3).
Tue Nov 28 2023 12:08:41 Version 3.12.0 LAPACK