SRC/claswp.f(3)

SRC/claswp.f(3) 🦋

okay bestie, you're in the Library Functions Manual and we're talking about SRC/claswp.f. It's giving "tiny row-swap icon" and I'm obsessed. ✨

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✨ NAME ✨

SRC/claswp.f

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🦋 SYNOPSIS 🦋

🧚 Functions/Subroutines

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

and the description is literally: CLASWP performs a series of row interchanges on a general rectangular matrix. 💅

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👑 Function/Subroutine Documentation 👑

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

CLASWP performs a series of row interchanges on a general rectangular matrix. No cap, that's the whole serve. 🫶

🌸 Purpose

CLASWP performs a series of row interchanges on the matrix A. One row interchange is initiated for each of rows K1 through K2 of A. Periodt. 💖

🎀 Parameters

🍓 N

N is INTEGER. It's the number of columns of the matrix A. 💜

🍓 A

A is a COMPLEX 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. Slay. ✨

🍓 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 an 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 fr fr:

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. Main character behavior, honestly. 👑

💜 Author

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

✨ Further Details:

This one was modified by R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA. 🫶

Definition at line 114 of file claswp.f.

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💅 Author

Generated automatically by Doxygen for LAPACK from the source code. 🧚

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okay that's the whole vibe bestie — LAPACK Version 3.12.0, page SRC/claswp.f(3), and yes the source/version footer is serving realness. bye and stay slay 💖✨🎀