SRC/sla_gerpvgrw.f(3)      Library Functions Manual      SRC/sla_gerpvgrw.f(3)

NAME
       SRC/sla_gerpvgrw.f

SYNOPSIS
   Functions/Subroutines
       real function sla_gerpvgrw (n, ncols, a, lda, af, ldaf)
           SLA_GERPVGRW

Function/Subroutine Documentation
   real function sla_gerpvgrw (integer n, integer ncols, real, dimension( lda,
       * ) a, integer lda, real, dimension( ldaf, * ) af, integer ldaf)
       SLA_GERPVGRW

       Purpose:


           !>
           !> SLA_GERPVGRW computes the reciprocal pivot growth factor
           !> norm(A)/norm(U). The  norm is used. If this is
           !> much less than 1, the stability of the LU factorization of the
           !> (equilibrated) matrix A could be poor. This also means that the
           !> solution X, estimated condition numbers, and error bounds could be
           !> unreliable.
           !>

       Parameters
           N

           !>          N is INTEGER
           !>     The number of linear equations, i.e., the order of the
           !>     matrix A.  N >= 0.
           !>

           NCOLS

           !>          NCOLS is INTEGER
           !>     The number of columns of the matrix A. NCOLS >= 0.
           !>

           A

           !>          A is REAL array, dimension (LDA,N)
           !>     On entry, the N-by-N matrix A.
           !>

           LDA

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

           AF

           !>          AF is REAL array, dimension (LDAF,N)
           !>     The factors L and U from the factorization
           !>     A = P*L*U as computed by SGETRF.
           !>

           LDAF

           !>          LDAF is INTEGER
           !>     The leading dimension of the array AF.  LDAF >= max(1,N).
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 96 of file sla_gerpvgrw.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0           SRC/sla_gerpvgrw.f(3)