SLASQ5(3)

📦 version 3.12.0, in opensuse-leap 16.0

💅 SLASQ5(3) — Library Functions Manual ✨

okay bestie, buckle up, we're looking at SLASQ5 from the Library Functions Manual today and honestly? she's a little icon. 🎀

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/slasq5.f

yes girl, the NAME section is literally just the whole file path. that's it. that's the name. no cap. 💀

🦋 SYNOPSIS 🦋

Functions/Subroutines

subroutine SLASQ5 (i0, n0, z, pp, tau, sigma, dmin, dmin1, dmin2, dn,
    dnm1, dnm2, ieee, eps)

SLASQ5 computes one dqds transform in ping-pong form. Used by sbdsqr and sstegr. 🏓

💖 Function/Subroutine Documentation 💖

subroutine SLASQ5 (integer i0, integer n0, real, dimension( * ) z, integer
    pp, real tau, real sigma, real dmin, real dmin1, real dmin2, real dn,
    real dnm1, real dnm2, logical ieee, real eps)

SLASQ5 computes one dqds transform in ping-pong form. Used by sbdsqr and sstegr. (yes, we're saying it again. she's important. 💅)

✨ Purpose ✨

!> !> SLASQ5 computes one dqds transform in ping-pong form, one !> version for IEEE machines another for non IEEE machines. !>

literally two versions, one for IEEE machines and one for non-IEEE machines. bestie's got range. 🌈

🎀 Parameters 🎀

  • I0 — I0 is INTEGER. First index. the beginning, the origin story, main character energy. ⭐
  • N0 — N0 is INTEGER. Last index. the finale. the end credits. 🎬
  • Z — Z is REAL array, dimension ( 4*N ). Z holds the qd array. EMIN is stored in Z(4*N0) to avoid an extra argument. (no extra arguments needed, she packs light 🧳)
  • PP — PP is INTEGER. PP=0 for ping, PP=1 for pong. 🏓 that's the whole ping-pong thing, iykyk
  • TAU — TAU is REAL. This is the shift. 💫
  • SIGMA — SIGMA is REAL. This is the accumulated shift up to this step. the shift's whole character arc, fr fr. 📈
  • DMIN — DMIN is REAL. Minimum value of d. the smallest one. lowkey humble. 🙈
  • DMIN1 — DMIN1 is REAL. Minimum value of d, excluding D( N0 ). so close to being the minimum but not quite 💔
  • DMIN2 — DMIN2 is REAL. Minimum value of d, excluding D( N0 ) and D( N0-1 ). even more excluded. girl is being left out of the group chat. 😭
  • DN — DN is REAL. d(N0), the last value of d. 👑
  • DNM1 — DNM1 is REAL. d(N0-1). second to last, still iconic. 🫶
  • DNM2 — DNM2 is REAL. d(N0-2). third to last, holding it down. 💜
  • IEEE — IEEE is LOGICAL. Flag for IEEE or non IEEE arithmetic. 🚩 (a good flag, for once)
  • EPS — EPS is REAL. This is the value of epsilon used. tiny but mighty, the smallest slay. 🧚

🌟 Author 🌟

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

the whole squad really showed up for this one. 🫶✨

Definition at line 142 of file slasq5.f. noting it down so you can find her later, bestie. 📌

⭐ Author ⭐

Generated automatically by Doxygen for LAPACK from the source code. so no, a human did not hand-write this page. she was built different. 🤖💅

and that's the whole page!! 🌸 LAPACK, Version 3.12.0, dated /home/abui...RC/slasq5.f(3) — signed, sealed, and delivered with love, mwah 💖🎀🦋

📦 where this page comes from