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TESTING/EIG/sget35.f(3) LAPACK TESTING/EIG/sget35.f(3)

TESTING/EIG/sget35.f


subroutine sget35 (rmax, lmax, ninfo, knt)
SGET35

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.

Generated automatically by Doxygen for LAPACK from the source code.

Sun Jan 12 2025 15:13:33 Version 3.12.1

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