
zgetrs.f(3) LAPACK zgetrs.f(3)
NAME
zgetrs.f 
SYNOPSIS
Functions/Subroutines
subroutine zgetrs (TRANS, N, NRHS, A, LDA, IPIV, B, LDB, INFO)
ZGETRS
Function/Subroutine Documentation
subroutine zgetrs (characterTRANS, integerN, integerNRHS, complex*16, dimension( lda, * )A,
integerLDA, integer, dimension( * )IPIV, complex*16, dimension( ldb, * )B, integerLDB,
integerINFO)
ZGETRS
Purpose:
ZGETRS solves a system of linear equations
A * X = B, A**T * X = B, or A**H * X = B
with a general NbyN matrix A using the LU factorization computed
by ZGETRF.
Parameters:
TRANS
TRANS is CHARACTER*1
Specifies the form of the system of equations:
= 'N': A * X = B (No transpose)
= 'T': A**T * X = B (Transpose)
= 'C': A**H * X = B (Conjugate transpose)
N
N is INTEGER
The order of the matrix A. N >= 0.
NRHS
NRHS is INTEGER
The number of right hand sides, i.e., the number of columns
of the matrix B. NRHS >= 0.
A
A is COMPLEX*16 array, dimension (LDA,N)
The factors L and U from the factorization A = P*L*U
as computed by ZGETRF.
LDA
LDA is INTEGER
The leading dimension of the array A. LDA >= max(1,N).
IPIV
IPIV is INTEGER array, dimension (N)
The pivot indices from ZGETRF; for 1<=i<=N, row i of the
matrix was interchanged with row IPIV(i).
B
B is COMPLEX*16 array, dimension (LDB,NRHS)
On entry, the right hand side matrix B.
On exit, the solution matrix X.
LDB
LDB is INTEGER
The leading dimension of the array B. LDB >= max(1,N).
INFO
INFO is INTEGER
= 0: successful exit
< 0: if INFO = i, the ith argument had an illegal value
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 122 of file zgetrs.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 zgetrs.f(3) 
