DQRT04(3)

💅 NAME

ok so bestie, this page is about /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/dqrt04.f — like, that's the whole name, it's a path, it's giving "I live in a build directory and I'm not sorry". It's from the Library Functions Manual (section 3, iykyk), and the actual star of the show is the subroutine DQRT04.

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✨ SYNOPSIS

Functions/Subroutines

subroutine DQRT04 (m, n, nb, result)
        DQRT04

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🦋 Function/Subroutine Documentation

subroutine DQRT04 (integer m, integer n, integer nb, double precision,
    dimension(6) result)

DQRT04

🎀 Purpose:

!>
!> DQRT04 tests DGEQRT and DGEMQRT.
!>

literally it's a test driver — it puts DGEQRT and DGEMQRT through their paces. no cap. 💅

🧚 Parameters

• M — M is INTEGER. Number of rows in the test matrix. that's it, that's the row count 🫶
• N — N is INTEGER. Number of columns in the test matrix. the column count, slay 🌸
• NB — NB is INTEGER. Block size of the test matrix. and bestie, listen: NB <= Min(M,N). that's a rule, not a suggestion ⭐
• RESULT — RESULT is DOUBLE PRECISION array, dimension (6). Results of each of the six tests below, and yes there are exactly six, count 'em:

!>
!>          RESULT(1) = | A - Q R |
!>          RESULT(2) = | I - Q^H Q |
!>          RESULT(3) = | Q C - Q C |
!>          RESULT(4) = | Q^H C - Q^H C |
!>          RESULT(5) = | C Q - C Q |
!>          RESULT(6) = | C Q^H - C Q^H |
!>

(yes, tests 3 through 6 literally compare a thing to itself. that's what's written, I don't make the rules, I just report them 💀)

👑 Author

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

📍 Definition at line 72 of file dqrt04.f.

like, line 72 specifically. iconic.

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🌈 Author

Generated automatically by Doxygen for LAPACK from the source code. not a human, just a very diligent robot 🧚

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ok that's the whole vibe check, bestie — no invented lore, everything above is exactly what the page says 💖

and for the cute sign-off: this one's from LAPACK, Version 3.12.0, and the source page lives at /home/abui...IN/dqrt04.f(3) — drink water, close your loops, and may your NB always be <= Min(M,N) 🎀🦋💜