NAME

       spotrs.f -

SYNOPSIS

   Functions/Subroutines
       subroutine spotrs (UPLO, N, NRHS, A, LDA, B, LDB, INFO)
           SPOTRS

Function/Subroutine Documentation

   subroutine spotrs (characterUPLO, integerN, integerNRHS, real, dimension( lda, * )A,
       integerLDA, real, dimension( ldb, * )B, integerLDB, integerINFO)
       SPOTRS

       Purpose:

            SPOTRS solves a system of linear equations A*X = B with a symmetric
            positive definite matrix A using the Cholesky factorization
            A = U**T*U or A = L*L**T computed by SPOTRF.

       Parameters:
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  Upper triangle of A is stored;
                     = 'L':  Lower triangle of A is stored.

           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 REAL array, dimension (LDA,N)
                     The triangular factor U or L from the Cholesky factorization
                     A = U**T*U or A = L*L**T, as computed by SPOTRF.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           B

                     B is REAL 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 i-th 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 111 of file spotrs.f.

Author

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