ZLASWP(3)

📦 version 3.12.0, in opensuse-leap 16.0

Hii bestie! You're looking at the zlaswp.f(3) page from the Library Functions Manual — the header path got squished to /home/abui...RC/zlaswp.f(3), and honestly same. Let's get into it 💅

🦋 NAME 🦋

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

That's the name. Literally the whole path. Periodt.

✨ SYNOPSIS ✨

🫶 Functions/Subroutines 🫶

  • subroutine ZLASWP (n, a, lda, k1, k2, ipiv, incx) — ZLASWP performs a series of row interchanges on a general rectangular matrix. Slay.

💖 Function/Subroutine Documentation 💖

   subroutine ZLASWP (integer n, complex*16, dimension( lda, * ) a, integer
       lda, integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)

Okay so same energy as the synopsis: ZLASWP performs a series of row interchanges on a general rectangular matrix. It's giving matrix glow-up, no cap.

🌸 Purpose 🌸

!> ZLASWP performs a series of row interchanges on the matrix A. !> One row interchange is initiated for each of rows K1 through K2 of A.

Wait, !>? That's just the Fortran doc-comment decoration, bestie. The real tea: row swaps on A, one for each row from K1 through K2. 🫶

🌈 Parameters 🌈

  • N — N is INTEGER. The number of columns of the matrix A. Yes, columns. Not a typo, that's what it says. 👑
  • A — A is COMPLEX*16 array, dimension (LDA,N). On entry, it's the matrix of column dimension N to which the row interchanges will be applied. On exit, it's the permuted matrix. Iconic behavior. ✨
  • LDA — LDA is INTEGER. The leading dimension of the array A. That's the whole vibe. 💅
  • K1 — K1 is INTEGER. The first element of IPIV for which a row interchange will be done. First in the group chat. 🎀
  • K2 — K2 is INTEGER. (K2-K1+1) is the number of elements of IPIV for which a row interchange will be done. Math? In this economy? But yes. 🧮
  • IPIV — IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX)). It's the vector of pivot indices. Only the elements in positions K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed. And IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be interchanged. So that's the swap map, iykyk. 🔁
  • INCX — INCX is INTEGER. The increment between successive values of IPIV. If INCX is negative, the pivots are applied in reverse order. Reverse order? She's unpredictable but valid. 💀

👑 Author 👑

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

🔍 Further Details:

Modified by R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

Definition at line 114 of file zlaswp.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

Final sign-off, bestie: this page says LAPACK Version 3.12.0 and the footer path is /home/abui...RC/zlaswp.f(3). There's no date printed on the footer, so no invented date from me. Byeeee 💖✨

📦 where this page comes from