TESTING/LIN/srzt01.f(3)

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version 3.12.1 · 3 versions
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💅 TESTING/LIN/srzt01.f(3) — Library Functions Manual 💅

okay so bestie, welcome to the TESTING/LIN/srzt01.f(3) page in the Library Functions Manual. This is the entry for srzt01, and it’s giving “tiny Fortran testing routine with main character energy.” ✨

🌸 NAME 🌸

TESTING/LIN/srzt01.f — that’s the page. The actual star is srzt01, a real function from the LAPACK testing lineup. 💖

📜 SYNOPSIS 📜

Functions/Subroutines

  • real function srzt01 (m, n, a, af, lda, tau, work, lwork) — the whole callable in one line: m, n, a, af, lda, tau, work, lwork. SRZT01 is the name on the door. 🫶

🛠️ Function/Subroutine Documentation 🛠️

srzt01

   real function srzt01 (integer m, integer n, real, dimension( lda, * ) a,
       real, dimension( lda, * ) af, integer lda, real, dimension( * ) tau,
       real, dimension( lwork ) work, integer lwork)

SRZT01 — that’s the routine, no cap. 💅

🎯 Purpose

okay so here’s the whole point, and it’s literally a ratio:

!> SRZT01 returns
!>      || A - R*Q || / ( M * eps * ||A|| )
!> for an upper trapezoidal A that was factored with STZRZF.
!>

So it returns that ratio for an upper trapezoidal A that was factored with STZRZF. iconic. 💖

✨ Parameters ✨

  • M — INTEGER. The number of rows of the matrices A and AF. Periodt.
  • N — INTEGER. The number of columns of the matrices A and AF. 🦋
  • A — REAL array, dimension (LDA,N). The original upper trapezoidal M by N matrix A. she’s the blueprint. 🌸
  • AF — REAL array, dimension (LDA,N). The output of STZRZF for input matrix A. The lower triangle is not referenced. 🙈
  • LDA — INTEGER. The leading dimension of the arrays A and AF. 💅
  • TAU — REAL array, dimension (M). Details of the Householder transformations as returned by STZRZF. 🔥
  • WORK — REAL array, dimension (LWORK). the workspace bestie, that’s all. 🫶
  • LWORK — INTEGER. The length of the array WORK. LWORK >= m*n + m*nb. ⭐

👑 Author

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

Definition at line 96 of file srzt01.f. 📌

🪄 Author

Generated automatically by Doxygen for LAPACK from the source code.

and that’s the whole page, bestie 💖 — LAPACK Version 3.12.0, source TESTING/LIN/srzt01.f(3); the footer didn’t list a date, so here’s the cute sign-off instead. go test that trapezoidal factorization and slay. ✨🎀

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