TESTING/LIN/sget04.f(3)

NAME
TESTING/LIN/sget04.f

SYNOPSIS

  Functions/Subroutines
subroutine sget04 (n, nrhs, x, ldx, xact, ldxact, rcond, resid)
SGET04

Function/Subroutine Documentation

  subroutine sget04 (integer n, integer nrhs, real, dimension( ldx, * ) x, integer ldx, real, dimension( ldxact, * ) xact, integer ldxact, real rcond, real resid)

SGET04

Purpose:

    !>
    !> SGET04 computes the difference between a computed solution and the
    !> true solution to a system of linear equations.
    !>
    !> RESID =  ( norm(X-XACT) * RCOND ) / ( norm(XACT) * EPS ),
    !> where RCOND is the reciprocal of the condition number and EPS is the
    !> machine epsilon.
    !>

Parameters
    N

    !>          N is INTEGER
    !>          The number of rows of the matrices X and XACT.  N >= 0.
    !>

    NRHS

    !>          NRHS is INTEGER
    !>          The number of columns of the matrices X and XACT.  NRHS >= 0.
    !>

    X

    !>          X is REAL array, dimension (LDX,NRHS)
    !>          The computed solution vectors.  Each vector is stored as a
    !>          column of the matrix X.
    !>

    LDX

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

    XACT

    !>          XACT is REAL array, dimension( LDX, NRHS )
    !>          The exact solution vectors.  Each vector is stored as a
    !>          column of the matrix XACT.
    !>

    LDXACT

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

    RCOND

    !>          RCOND is REAL
    !>          The reciprocal of the condition number of the coefficient
    !>          matrix in the system of equations.
    !>

    RESID

    !>          RESID is REAL
    !>          The maximum over the NRHS solution vectors of
    !>          ( norm(X-XACT) * RCOND ) / ( norm(XACT) * EPS )
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 101 of file sget04.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.