SRC/slaswp.f(3)

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version 3.12.1 · 4 versions
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💅 SRC/slaswp.f(3) 💅

okay so this is from the Library Functions Manual, and it's the page for SRC/slaswp.f — yes bestie, we're getting into the slaswp subroutine. No cap, every technical deet is staying. 🫶

NAME

SRC/slaswp.f — that's the name, periodt. 💖

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine slaswp (n, a, lda, k1, k2, ipiv, incx)

SLASWP performs a series of row interchanges on a general rectangular matrix. 🌀

🫶 Function/Subroutine Documentation 🫶

subroutine slaswp (integer n, real, dimension( lda, * ) a, integer lda,
     integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)

SLASWP performs a series of row interchanges on a general rectangular matrix.

Purpose

SLASWP performs a series of row interchanges on the matrix A. One row interchange is initiated for each of rows K1 through K2 of A. That's the whole purpose, and it ate. 💅

Parameters

  • N — N is INTEGER. It's the number of columns of the matrix A. 🌸
  • A — A is REAL 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. Literally the main character of this whole operation. 👑
  • LDA — LDA is INTEGER. It's the leading dimension of the array A. 🎀
  • K1 — K1 is INTEGER. It's the first element of IPIV for which a row interchange will be done. 🦋
  • K2 — K2 is INTEGER. (K2-K1+1) is the number of elements of IPIV for which a row interchange will be done. 🌈
  • 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. iykyk. 🔥
  • INCX — INCX is INTEGER. It's the increment between successive values of IPIV. If INCX is negative, the pivots are applied in reverse order. That's a real detail, bestie — don't skip it. 💀

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 slaswp.f.

That's where the definition lives: line 114 of file slaswp.f. 🌟

Author

Generated automatically by Doxygen for LAPACK from the source code.

💖 cute sign-off 💖 so yeah, bestie: this page is from LAPACK, Version 3.12.0, source SRC/slaswp.f(3). The footer date slot is not giving a date — no cap, it's just those source/version deets. Doxygen generated it automatically for LAPACK from the source code. Periodt. 🎀✨

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