DRZT01(3)

🌸 DRZT01(3) 🌸

bestie, this is a page from the Library Functions Manual, and the header tags it as /home/abui...IN/drzt01.f(3). It’s all about DRZT01, no cap. 💖

💖 NAME 💖

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/drzt01.f

📜 SYNOPSIS 📜

✨ Functions/Subroutines ✨

double precision function DRZT01 (m, n, a, af, lda, tau, work, lwork)
    DRZT01

🔥 Function/Subroutine Documentation 🔥

double precision function DRZT01 (integer m, integer n, double precision,
    dimension( lda, * ) a, double precision, dimension( lda, * ) af, integer
    lda, double precision, dimension( * ) tau, double precision, dimension(
    lwork ) work, integer lwork)
    DRZT01

🎯 Purpose 🎯

okay so DRZT01 returns

|| A - R*Q || / ( M * eps * ||A|| )

for an upper trapezoidal A that was factored with DTZRZF. periodt. 💅

🌸 Parameters 🌸

• M — M is INTEGER. The number of rows of the matrices A and AF.
• N — N is INTEGER. The number of columns of the matrices A and AF.
• A — A is DOUBLE PRECISION array, dimension (LDA,N). The original upper trapezoidal M by N matrix A.
• AF — AF is DOUBLE PRECISION array, dimension (LDA,N). The output of DTZRZF for input matrix A. The lower triangle is not referenced.
• LDA — LDA is INTEGER. The leading dimension of the arrays A and AF.
• TAU — TAU is DOUBLE PRECISION array, dimension (M). Details of the Householder transformations as returned by DTZRZF.
• WORK — WORK is DOUBLE PRECISION array, dimension (LWORK).
• LWORK — LWORK is 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 drzt01.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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and that’s the whole page, bestie 🫶✨ — the footer says LAPACK Version 3.12.0 and /home/abui...IN/drzt01.f(3). Bye 💅