TESTING/EIG/sget35.f(3)

NAME
TESTING/EIG/sget35.f

SYNOPSIS

  Functions/Subroutines
subroutine sget35 (rmax, lmax, ninfo, knt)
SGET35

Function/Subroutine Documentation

  subroutine sget35 (real rmax, integer lmax, integer ninfo, integer knt)

SGET35

Purpose:

    !>
    !> SGET35 tests STRSYL, a routine for solving the Sylvester matrix
    !> equation
    !>
    !>    op(A)*X + ISGN*X*op(B) = scale*C,
    !>
    !> A and B are assumed to be in Schur canonical form, op() represents an
    !> optional transpose, and ISGN can be -1 or +1.  Scale is an output
    !> less than or equal to 1, chosen to avoid overflow in X.
    !>
    !> The test code verifies that the following residual is order 1:
    !>
    !>    norm(op(A)*X + ISGN*X*op(B) - scale*C) /
    !>        (EPS*max(norm(A),norm(B))*norm(X))
    !>

Parameters
    RMAX

    !>          RMAX is REAL
    !>          Value of the largest test ratio.
    !>

    LMAX

    !>          LMAX is INTEGER
    !>          Example number where largest test ratio achieved.
    !>

    NINFO

    !>          NINFO is INTEGER
    !>          Number of examples where INFO is nonzero.
    !>

    KNT

    !>          KNT is INTEGER
    !>          Total number of examples tested.
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 77 of file sget35.f.

Author

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