zpotrs (l)  Linux Manuals
zpotrs: solves a system of linear equations A*X = B with a Hermitian positive definite matrix A using the Cholesky factorization A = U**H*U or A = L*L**H computed by ZPOTRF
Command to display zpotrs
manual in Linux: $ man l zpotrs
NAME
ZPOTRS  solves a system of linear equations A*X = B with a Hermitian positive definite matrix A using the Cholesky factorization A = U**H*U or A = L*L**H computed by ZPOTRF
SYNOPSIS
 SUBROUTINE ZPOTRS(

UPLO, N, NRHS, A, LDA, B, LDB, INFO )

CHARACTER
UPLO

INTEGER
INFO, LDA, LDB, N, NRHS

COMPLEX*16
A( LDA, * ), B( LDB, * )
PURPOSE
ZPOTRS solves a system of linear equations A*X = B with a Hermitian
positive definite matrix A using the Cholesky factorization
A = U**H*U or A = L*L**H computed by ZPOTRF.
ARGUMENTS
 UPLO (input) CHARACTER*1

= aqUaq: Upper triangle of A is stored;
= aqLaq: Lower triangle of A is stored.
 N (input) INTEGER

The order of the matrix A. N >= 0.
 NRHS (input) INTEGER

The number of right hand sides, i.e., the number of columns
of the matrix B. NRHS >= 0.
 A (input) COMPLEX*16 array, dimension (LDA,N)

The triangular factor U or L from the Cholesky factorization
A = U**H*U or A = L*L**H, as computed by ZPOTRF.
 LDA (input) INTEGER

The leading dimension of the array A. LDA >= max(1,N).
 B (input/output) COMPLEX*16 array, dimension (LDB,NRHS)

On entry, the right hand side matrix B.
On exit, the solution matrix X.
 LDB (input) INTEGER

The leading dimension of the array B. LDB >= max(1,N).
 INFO (output) INTEGER

= 0: successful exit
< 0: if INFO = i, the ith argument had an illegal value
Pages related to zpotrs
 zpotrs (3)
 zpotrf (l)  computes the Cholesky factorization of a complex Hermitian positive definite matrix A
 zpotri (l)  computes the inverse of a complex Hermitian positive definite matrix A using the Cholesky factorization A = U**H*U or A = L*L**H computed by ZPOTRF
 zpotf2 (l)  computes the Cholesky factorization of a complex Hermitian positive definite matrix A
 zpocon (l)  estimates the reciprocal of the condition number (in the 1norm) of a complex Hermitian positive definite matrix using the Cholesky factorization A = U**H*U or A = L*L**H computed by ZPOTRF
 zpoequ (l)  computes row and column scalings intended to equilibrate a Hermitian positive definite matrix A and reduce its condition number (with respect to the twonorm)
 zpoequb (l)  computes row and column scalings intended to equilibrate a symmetric positive definite matrix A and reduce its condition number (with respect to the twonorm)
 zporfs (l)  improves the computed solution to a system of linear equations when the coefficient matrix is Hermitian positive definite,