sgetrs.f (3)  Linux Manuals
NAME
sgetrs.f 
SYNOPSIS
Functions/Subroutines
subroutine sgetrs (TRANS, N, NRHS, A, LDA, IPIV, B, LDB, INFO)
SGETRS
Function/Subroutine Documentation
subroutine sgetrs (characterTRANS, integerN, integerNRHS, real, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, real, dimension( ldb, * )B, integerLDB, integerINFO)
SGETRS
Purpose:

SGETRS solves a system of linear equations A * X = B or A**T * X = B with a general NbyN matrix A using the LU factorization computed by SGETRF.
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**T* X = B (Conjugate transpose = Transpose)
NN is INTEGER The order of the matrix A. N >= 0.
NRHSNRHS is INTEGER The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
AA is REAL array, dimension (LDA,N) The factors L and U from the factorization A = P*L*U as computed by SGETRF.
LDALDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
IPIVIPIV is INTEGER array, dimension (N) The pivot indices from SGETRF; for 1<=i<=N, row i of the matrix was interchanged with row IPIV(i).
BB is REAL array, dimension (LDB,NRHS) On entry, the right hand side matrix B. On exit, the solution matrix X.
LDBLDB is INTEGER The leading dimension of the array B. LDB >= max(1,N).
INFOINFO 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 sgetrs.f.
Author
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