TESTING/LIN/cqrt05.f(3)

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version 3.12.1 · 3 versions
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💖 NAME 💖

Okay so this is TESTING/LIN/cqrt05.f(3), bestie — the page for TESTING/LIN/cqrt05.f, and it lives in the Library Functions Manual. It's all about the cqrt05 subroutine. 💅

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine cqrt05 (m, n, l, nb, result)
    CQRT05

🎀 Function/Subroutine Documentation 🎀

The actual signature is giving:

subroutine cqrt05 (integer m, integer n, integer l, integer nb, real,
     dimension(6) result)
    CQRT05

🌈 Purpose

CQRT05 tests CTPQRT and CTPMQRT. That's the whole vibe, periodt. ✨

🦋 Parameters

  • M — M is INTEGER; it's the number of rows in lower part of the test matrix.
  • N — N is INTEGER; it's the number of columns in test matrix.
  • L — L is INTEGER; it's the number of rows of the upper trapezoidal part the lower test matrix. And yes, 0 <= L <= M is the rule, bestie.
  • NB — NB is INTEGER; it's the block size of test matrix. Also NB <= N. 🫶
  • RESULT — RESULT is REAL array, dimension (6); it holds the results of each of the six tests below. 👑

The six results are listed exactly like this:

  1. RESULT(1) = | A - Q R |
  2. RESULT(2) = | I - Q^H Q |
  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 79 of file cqrt05.f.

💌 Author 💌

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xoxo, bestie — this iconic little page is from TESTING/LIN/cqrt05.f(3) and LAPACK Version 3.12.0. Stay sliving 💅🫶

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