DRZT02(3)

📦 version 3.12.0, in opensuse-leap 16.0

🌸 NAME 🌸

okay bestie, welcome to drzt02.f(3) from the Library Functions Manual 💖 — this page is literally all about /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/drzt02.f. That path ate and left no crumbs. 🎀

✨ SYNOPSIS ✨

Functions/Subroutines

double precision function DRZT02 (m, n, af, lda, tau, work, lwork)
    DRZT02

🦋 Function/Subroutine Documentation 🦋

double precision function DRZT02 (integer m, integer n, double precision, dimension( lda, * ) af, integer lda, double precision, dimension( * ) tau, double precision, dimension( lwork ) work, integer lwork)
    DRZT02

🎀 Purpose 🎀

no cap, the whole point is this formula right here 👑:

!>
!> DRZT02 returns
!>      || I - Q'*Q || / ( M * eps)
!> where the matrix Q is defined by the Householder transformations
!> generated by DTZRZF.
!>

💅 Parameters 💅

  • M — M is INTEGER; it's the number of rows of the matrix AF. 🍓
  • N — N is INTEGER; it's the number of columns of the matrix AF. 🍓
  • AF — AF is DOUBLE PRECISION array, dimension (LDA,N); it's the output of DTZRZF. main character array fr fr.
  • LDA — LDA is INTEGER; it's the leading dimension of the array AF. 💫
  • TAU — TAU is DOUBLE PRECISION array, dimension (M); it holds the details of the Householder transformations as returned by DTZRZF. iykyk ✨
  • WORK — WORK is DOUBLE PRECISION array, dimension (LWORK). 💜
  • LWORK — LWORK is INTEGER; it's the length of WORK array. LWORK >= N*N+N*NB. 🫶

👑 Author 👑

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

Definition at line 89 of file drzt02.f.

🌈 Author 🌈

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byeee 💖 — final footer deets for the besties: LAPACK, Version 3.12.0, and the tag /home/abui...IN/drzt02.f(3). slay, periodt. 🎀✨

📦 where this page comes from