TESTING/EIG/dget34.f(3)

✨ NAME ✨

okay so this page is literally TESTING/EIG/dget34.f 💅 — and yes, near the top the manual name is Library Functions Manual, bestie. We're in TESTING/EIG/dget34.f(3) and it's giving very specific LAPACK testing energy 🦋

🦋 SYNOPSIS 🦋

Functions/Subroutines

• subroutine dget34 (rmax, lmax, ninfo, knt) — DGET34 👑

💅 Function/Subroutine Documentation 💅

subroutine dget34 (double precision rmax, integer lmax, integer, dimension(
    2 ) ninfo, integer knt)

DGET34 🔥

🎀 Purpose 🎀

okay so the whole point is this: DGET34 tests DLAEXC, a routine for swapping adjacent blocks (either 1 by 1 or 2 by 2) on the diagonal of a matrix in real Schur form. Thus, DLAEXC computes an orthogonal matrix Q such that

    Q' * [ A B ] * Q  = [ C1 B1 ]
         [ 0 C ]        [ 0  A1 ]

where C1 is similar to C and A1 is similar to A. Both A and C are assumed to be in standard form (equal diagonal entries and offdiagonal with differing signs) and A1 and C1 are returned with the same properties. ✨

The test code verifies these last assertions, as well as that the residual in the above equation is small. no cap, that residual check is the moment 👑

💖 Parameters 💖

RMAX

RMAX is DOUBLE PRECISION. Value of the largest test ratio. 📈

LMAX

LMAX is INTEGER. Example number where largest test ratio achieved. 🎯

NINFO

NINFO is INTEGER array, dimension (2). NINFO(J) is the number of examples where INFO=J occurred. 🧮

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 81 of file dget34.f. 📍

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code. 🤖✨

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okay that's the whole page, bestie 🫶 cute little footer sign-off: LAPACK Version 3.12.0, page TESTING/EIG/dget34.f(3). bye 💖🎀