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zpotrs (3)
  • >> zpotrs (3) ( Solaris man: Библиотечные вызовы )
  • 
    NAME
         zpotrs - solve a system of linear equations A*X = B  with  a
         Hermitian positive definite matrix A using the Cholesky fac-
         torization 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, * )
    
    
    
         #include <sunperf.h>
    
         void zpotrs(char uplo, int n, int nrhs,  doublecomplex  *za,
                   int lda, doublecomplex *zb, int ldb, int *info) ;
    
    PURPOSE
         ZPOTRS solves a system of linear equations A*X =  B  with  a
         Hermitian positive definite matrix A using the Cholesky fac-
         torization A = U**H*U or A = L*L**H computed by ZPOTRF.
    
    
    ARGUMENTS
         UPLO      (input) CHARACTER*1
                   = 'U':  Upper triangle of A is stored;
                   = 'L':  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 com-
                   puted 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 i-th argument had an ille-
                   gal value
    
    
    
    


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