SGET34(3)

📦 version 3.12.0, in opensuse-leap 16.0

🎀 SGET34 🎀

ok so bestie, real talk — this page is literally the manual for sget34.f, and its whole government name is a path, so brace yourself:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/EIG/sget34.f

like. it lives in the TESTING/EIG folder of LAPACK and it is a test file, which is honestly iconic of it. 💅

✨ SYNOPSIS ✨

Functions/Subroutines

  • subroutine SGET34 (rmax, lmax, ninfo, knt) — the one and only. that's her. that's the whole API. 🫶

💜 Function/Subroutine Documentation 💜

subroutine SGET34 (real rmax, integer lmax, integer, dimension( 2 ) ninfo,
    integer knt)

SGET34

🌸 Purpose 🌸

ok so picture this: SGET34 is out here testing SLAEXC, which is the routine that swaps adjacent blocks (either 1 by 1 or 2 by 2, no in-between bestie) on the diagonal of a matrix in real Schur form. so SLAEXC computes an orthogonal matrix Q such that

Q' * [ A B ] * Q  = [ C1 B1 ]
     [ 0 C ]        [ 0  A1 ]

where C1 is similar to C and A1 is similar to A. both A and C are assumed to be in standard form (that means equal diagonal entries, and offdiagonal with differing signs, iykyk) and A1 and C1 get returned with those exact same properties. slay. ✨

and then the test code goes and verifies these last last assertions, plus that the residual in the equation above is small. like, "small" small. she checks. she's thorough. 👑

ngl the original really does say "last last" twice — I'm not fixing that, that's canon, I love her for it 💀

💖 Parameters 💖

  • RMAX — RMAX is REAL. it holds the value of the largest test ratio. the big one. the record-holder. 🔥
  • LMAX — LMAX is INTEGER. it's the example number where that largest test ratio was achieved. so like, RMAX's home address. 🏠
  • NINFO — NINFO is INTEGER array, dimension (2). NINFO(J) is the number of examples where INFO=J occurred. counting girlie. 🔢
  • KNT — KNT is INTEGER. total number of examples tested. the whole headcount. 🫶

👑 Author 👑

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

📍 Definition at line 81 of file sget34.f.

🦋 Author (yes, again) 🦋

Generated automatically by Doxygen for LAPACK from the source code. not a human, just a little robot doing her best. 🤖💕

and that's the whole vibe check, bestie! 💜 this page is from LAPACK, Version 3.12.0, and yes the path is still .../EIG/sget34.f — anyway drink some water, go test your Schur forms, mwah 🎀🦋✨

📦 where this page comes from