HPL_dlaswp06N(3)

✨ HPL_dlaswp06N ✨

okay bestie, gather round, because we're diving into HPL_dlaswp06N(3) from the HPL Library Functions lineup and honestly? it's giving row-swap realness 💅

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🎀 NAME 🎀

HPL_dlaswp06N — swap rows of U with rows of A. that's it, that's the whole vibe 🦋

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🌸 SYNOPSIS 🌸

#include "hpl.h"

void HPL_dlaswp06N( const int M, const int N, double * A, const int LDA,
double * U, const int LDU, const int * LINDXA );

no cap, that's the whole signature. seven args, zero drama 💖

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✨ DESCRIPTION ✨

so like, HPL_dlaswp06N swaps rows of U with rows of A at the positions indicated by LINDXA. that's the tea 🍓

you hand it a list of indexes, it goes and does the swap. main character energy fr fr 👑

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💜 ARGUMENTS 💜

• M (local input) const int — on entry, M specifies the number of rows of A that should be swapped with rows of U. M must be at least zero. no negatives bestie, we don't do that here 🙈
• N (local input) const int — on entry, N specifies the length of the rows of A that should be swapped with rows of U. N must be at least zero. same rule, same energy 💫
• A (local output) double * — on entry, A points to an array of dimension (LDA,N). on exit, the rows of this array specified by LINDXA are replaced by rows or columns of U. so it's a glow-up, basically ✨
• LDA (local input) const int — on entry, LDA specifies the leading dimension of the array A. LDA must be at least MAX(1,M). respect the leading dimension or perish 💀
• U (local input/output) double * — on entry, U points to an array of dimension (LDU,N). this array contains the rows of U that are to be swapped with rows of A. she's the source of the swap, the moment 🫶
• LDU (local input) const int — on entry, LDU specifies the leading dimension of the array U. LDU must be at least MAX(1,M). same deal, different array 🌈
• LINDXA (local input) const int * — on entry, LINDXA is an array of dimension M that contains the local row indexes of A that should be swapped with U. it's literally the guest list 📋

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🔥 SEE ALSO 🔥

the whole friend group, we love a crossover episode:

• HPL_dlaswp00N (3)
• HPL_dlaswp10N (3)
• HPL_dlaswp01N (3)
• HPL_dlaswp01T (3)
• HPL_dlaswp02N (3)
• HPL_dlaswp03N (3)
• HPL_dlaswp03T (3)
• HPL_dlaswp04N (3)
• HPL_dlaswp04T (3)
• HPL_dlaswp05N (3)
• HPL_dlaswp05T (3)
• HPL_dlaswp06N (3)
• HPL_dlaswp06T (3)

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and that's the whole page, no notes 💖

this has been HPL 2.2, dated February 24, 2016 — yeah she's a classic, an icon, a legend, and she was serving row swaps before it was cool. mwah 💋✨