SRC/dlasdt.f(3)

📦
version 3.12.1 · 7 versions
, in arch rolling

okay bestie, welcome to SRC/dlasdt.f(3) from the Library Functions Manual 💅 this one is all about a cute little tree of subproblems, and yes, it’s giving main-character LAPACK energy ✨

💖 NAME 💖

SRC/dlasdt.f

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

subroutine dlasdt (n, lvl, nd, inode, ndiml, ndimr, msub)
           DLASDT creates a tree of subproblems for bidiagonal divide and
           conquer. Used by sbdsdc.

🌸 Function/Subroutine Documentation 🌸

subroutine dlasdt (integer n, integer lvl, integer nd, integer, dimension( *
       ) inode, integer, dimension( * ) ndiml, integer, dimension( * ) ndimr,
       integer msub)

DLASDT creates a tree of subproblems for bidiagonal divide and conquer. Used by sbdsdc. That’s the whole vibe, and honestly? Iconic 🎀

🎀 Purpose 🎀

Purpose: literally what it says, bestie — DLASDT creates a tree of subproblems for bidiagonal divide and conquer. No cap. Here’s the raw doc-comment block for full transparency:

           !>
           !> DLASDT creates a tree of subproblems for bidiagonal divide and
           !> conquer.
           !>

💅 Parameters 💅

  • N — is INTEGER. On entry, the number of diagonal elements of the bidiagonal matrix.
  • LVL — is INTEGER. On exit, the number of levels on the computation tree.
  • ND — is INTEGER. On exit, the number of nodes on the tree.
  • INODE — is INTEGER array, dimension ( N ). On exit, centers of subproblems.
  • NDIML — is INTEGER array, dimension ( N ). On exit, row dimensions of left children.
  • NDIMR — is INTEGER array, dimension ( N ). On exit, row dimensions of right children.
  • MSUB — is INTEGER. On entry, the maximum row dimension each subproblem at the bottom of the tree can be of.

🌈 Author 🌈

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

🦋 Contributors 🦋

Ming Gu and Huan Ren, Computer Science Division, University of California at Berkeley, USA

Definition at line 104 of file dlasdt.f. 🫶

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

okay that’s the whole flex 💖 this page is from LAPACK, Version 3.12.0, and the source is SRC/dlasdt.f(3). bye bestie 🫶✨

📦 where this page comes from