LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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cget35.f File Reference

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Functions/Subroutines

subroutine cget35 (RMAX, LMAX, NINFO, KNT, NIN)
 CGET35

Function/Subroutine Documentation

subroutine cget35 ( real  RMAX,
integer  LMAX,
integer  NINFO,
integer  KNT,
integer  NIN 
)

CGET35

Purpose:
 CGET35 tests CTRSYL, 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
[out]RMAX
          RMAX is REAL
          Value of the largest test ratio.
[out]LMAX
          LMAX is INTEGER
          Example number where largest test ratio achieved.
[out]NINFO
          NINFO is INTEGER
          Number of examples where INFO is nonzero.
[out]KNT
          KNT is INTEGER
          Total number of examples tested.
[in]NIN
          NIN is INTEGER
          Input logical unit number.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2011

Definition at line 85 of file cget35.f.

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