TESTING/EIG/zget35.f(3)

💖 NAME 💖

okay so this is the Library Functions Manual page for TESTING/EIG/zget35.f, and bestie, it’s giving serious Fortran test-routine energy. 🫶

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✨ SYNOPSIS ✨

Functions/Subroutines

• subroutine zget35 (rmax, lmax, ninfo, knt, nin) — ZGET35

subroutine zget35 (rmax, lmax, ninfo, knt, nin)
    ZGET35

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🫶 Function/Subroutine Documentation 🫶

subroutine zget35 (double precision rmax, integer lmax, integer ninfo, integer knt, integer nin)

ZGET35

Purpose

okay so ZGET35 tests ZTRSYL, 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 — DOUBLE PRECISION; value of the largest test ratio.
• LMAX — INTEGER; example number where largest test ratio achieved.
• NINFO — INTEGER; number of examples where INFO is nonzero.
• KNT — INTEGER; total number of examples tested.
• NIN — INTEGER; input logical unit number.

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Definition at line 83 of file zget35.f.

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🌸 Author 🌸

Generated automatically by Doxygen for LAPACK from the source code.

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okay bestie, that’s the whole page — signing off with LAPACK Version 3.12.0, TESTING/EIG/zget35.f(3), and the footer didn’t give us a date so we’re not inventing one, periodt 💜🦋✨