ZQRT04(3)

🦋 ZQRT04(3) — Library Functions Manual 🦋

okay so welcome, bestie! This is the /home/abui...IN/zqrt04.f(3) page in the Library Functions Manual. It’s giving “LAPACK testing subroutine documentation,” and we’re gonna get through every single detail together. 💖

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🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zqrt04.f

That whole long path is literally the name on this page. No cap. 💅

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✨ SYNOPSIS ✨

Functions/Subroutines

       subroutine ZQRT04 (m, n, nb, result)
           ZQRT04

So the callable thing is ZQRT04, and it takes m, n, nb, and result. Simple as that. 🫶

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🎀 Function/Subroutine Documentation 🎀

subroutine ZQRT04 (integer m, integer n, integer nb, double precision, dimension(6) result)

   subroutine ZQRT04 (integer m, integer n, integer nb, double precision,
       dimension(6) result)
       ZQRT04

Purpose:

           !>
           !> ZQRT04 tests ZGEQRT and ZGEMQRT.
           !>

Translation: ZQRT04 is the test for ZGEQRT and ZGEMQRT. It’s literally giving quality assurance, periodt. ✨

Parameters

M — M is INTEGER, and it’s the number of rows in the test matrix. Source comment energy: Number of rows in test matrix. 📏

N — N is INTEGER, and it’s the number of columns in the test matrix. Source comment energy: Number of columns in test matrix. 📐

NB — NB is INTEGER, and it’s the block size of the test matrix. Important caveat: NB <= Min(M,N). So don’t try to sneak a bigger block size in there, bestie. 🚫

RESULT — RESULT is DOUBLE PRECISION array, dimension (6). The source says: Results of each of the six tests below. The six expressions are exactly:

• 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 |

Those are the six tests, character for character. Don’t come for me if some of them look like they repeat — I’m keeping the source exactly as it is. 💀

Author

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

Definition at line 72 of file zqrt04.f.

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💅 Author 💅

Generated automatically by Doxygen for LAPACK from the source code.

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That’s the whole page, bestie! Cute little footer sign-off: LAPACK Version 3.12.0, path /home/abui...IN/zqrt04.f(3). There’s no date line on this footer, so I’m not inventing one. Byeee! 💖✨