The OpenNET Project / Index page

[ новости /+++ | форум | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

dgetrs (3)
  • >> dgetrs (3) ( Solaris man: Библиотечные вызовы )
  • 
    NAME
         dgetrs - solve a system of linear equations  A * X = B or A'
         * X = B with a general N-by-N matrix A using the LU factori-
         zation computed by DGETRF
    
    SYNOPSIS
         SUBROUTINE DGETRS( TRANS, N, NRHS, A,  LDA,  IPIV,  B,  LDB,
                   INFO )
    
         CHARACTER TRANS
    
         INTEGER INFO, LDA, LDB, N, NRHS
    
         INTEGER IPIV( * )
    
         DOUBLE PRECISION A( LDA, * ), B( LDB, * )
    
    
    
         #include <sunperf.h>
    
         void dgetrs(char trans, int n, int  nrhs,  double  *da,  int
                   lda,  int *ipivot, double *db, int ldb, int *info)
                   ;
    
    PURPOSE
         DGETRS solves a system of linear equations
            A * X = B  or  A' * X = B with a general N-by-N matrix  A
         using the LU factorization computed by DGETRF.
    
    
    ARGUMENTS
         TRANS     (input) CHARACTER*1
                   Specifies the form of the system of equations:
                   = 'N':  A * X = B  (No transpose)
                   = 'T':  A'* X = B  (Transpose)
                   = 'C':  A'* X = B  (Conjugate  transpose  =  Tran-
                   spose)
    
         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) DOUBLE PRECISION array, dimension (LDA,N)
                   The factors L and U from  the  factorization  A  =
                   P*L*U as computed by DGETRF.
    
         LDA       (input) INTEGER
                   The leading dimension of  the  array  A.   LDA  >=
                   max(1,N).
    
         IPIV      (input) INTEGER array, dimension (N)
                   The pivot indices from DGETRF; for 1<=i<=N, row  i
                   of the matrix was interchanged with row IPIV(i).
    
         B         (input/output) DOUBLE PRECISION  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 i-th argument had an ille-
                   gal value
    
    
    
    


    Поиск по тексту MAN-ов: 




    Партнёры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2024 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру