TESTING/LIN/srzt02.f(3)

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version 3.12.1 · 3 versions
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💖 TESTING/LIN/srzt02.f — LAPACK manual page, bestie 💖

Okay so this is the page for TESTING/LIN/srzt02.f(3) from the Library Functions Manual, and the manual name is folded in right here like a little name tag. It’s giving “small testing subroutine with main character energy,” and we are going to read it properly. 💅✨

🌸 NAME 🌸

TESTING/LIN/srzt02.f — this is the manual page for TESTING/LIN/srzt02.f(3), and the function in question is srzt02. No cap, that’s the whole name section. 🎀

✨ SYNOPSIS ✨

🧚 Functions/Subroutines

real function srzt02 (m, n, af, lda, tau, work, lwork)
    SRZT02

It’s a real function, and the label is literally SRZT02. Iconic. 🦋

🦋 Function/Subroutine Documentation 🦋

👑 real function srzt02

real function srzt02 (integer m, integer n, real, dimension( lda, * ) af,
    integer lda, real, dimension( * ) tau, real, dimension( lwork ) work,
    integer lwork)

Label check: SRZT02. Yup, that’s the one. 💫

💜 Purpose

Here’s the whole point, and I’m keeping the math exactly as it is, bestie:

SRZT02 returns
     || I - Q'*Q || / ( M * eps)
where the matrix Q is defined by the Householder transformations
generated by STZRZF.

So it returns that expression, and Q is defined by the Householder transformations generated by STZRZF. Periodt. 🫶

🎀 Parameters

  • M — M is INTEGER. The number of rows of the matrix AF.
  • N — N is INTEGER. The number of columns of the matrix AF.
  • AF — AF is REAL array, dimension (LDA,N). It is the output of STZRZF.
  • LDA — LDA is INTEGER. The leading dimension of the array AF.
  • TAU — TAU is REAL array, dimension (M). Details of the Householder transformations as returned by STZRZF.
  • WORK — WORK is REAL array, dimension (LWORK).
  • LWORK — LWORK is INTEGER. Length of WORK array. LWORK >= N*N+N*NB.

That’s every parameter, every type, every dimension, and the LWORK >= N*N+N*NB requirement — all present and accounted for. 🍓

💫 Author

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

Institutional excellence, honestly. 👑

Definition at line 89 of file srzt02.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code. Slay, automation. 🤖💖

Cute little footer sign-off: source/version is LAPACK Version 3.12.0, page TESTING/LIN/srzt02.f(3). The date is not listed in the footer, bestie — I’m not inventing one. Bye, ily, go test something. 🫶💜

📦 where this page comes from