TESTING/LIN/dtsqr01.f(3)

💖 NAME 💖

TESTING/LIN/dtsqr01.f — manual-page name: TESTING/LIN/dtsqr01.f(3), and the header calls it a Library Functions Manual page. It’s the dtsqr01 test-routine corner of LAPACK, and yes bestie, it’s giving very specific numerical tea ✨

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine dtsqr01 (tssw, m, n, mb, nb, result)
    DTSQR01

🦋 Function/Subroutine Documentation 🦋

🧚 subroutine dtsqr01 🧚

subroutine dtsqr01 (character tssw, integer m, integer n, integer mb,
     integer nb, double precision, dimension(6) result)

DTSQR01

🌸 Purpose 🌸

Straight from the Doxygen !> comment block: DTSQR01 tests DGEQR , DGELQ, DGEMLQ and DGEMQR. No cap, that’s the whole assignment.

🎀 Parameters 🎀

• TSSW — TSSW is CHARACTER. 'TS' is for testing tall skinny QR, and anything else is for testing short wide LQ. Choose your fighter 💅
• M — M is INTEGER. Number of rows in test matrix.
• N — N is INTEGER. Number of columns in test matrix.
• MB — MB is INTEGER. Number of row in row block in test matrix. (Yes, “row,” exactly as the page says — we don’t edit the icon.)
• NB — NB is INTEGER. Number of columns in column block test matrix.
• RESULT — RESULT is DOUBLE PRECISION array, dimension (6). Results of each of the six tests below:
  1. RESULT(1) = | A - Q R | or | A - L Q |
  2. RESULT(2) = | I - Q^H Q | or | I - Q Q^H |
  3. RESULT(3) = | Q C - Q C |
  4. RESULT(4) = | Q^H C - Q^H C |
  5. RESULT(5) = | C Q - C Q |
  6. RESULT(6) = | C Q^H - C Q^H |

👑 Author 👑

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

Definition at line 83 of file dtsqr01.f.

👑 Author 👑 <span> </span>

Generated automatically by Doxygen for LAPACK from the source code.

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Sign-off tea: LAPACK Version 3.12.0, source TESTING/LIN/dtsqr01.f(3). The footer doesn’t list a separate date, so no invented calendar moment here — just the version and the source, bestie 💅✨