lis_matrix_set_csr(3f)

💖 lis_matrix_set_csr — the Lis library's lil CSR-gluing baddie 💖

okay bestie, welcome to the lis_matrix_set_csr(3f) page from the Lis Library Functions set. sit down, grab a strawberry 🍓, and let's talk about how you hand your raw CSR arrays over to a matrix. no cap, it's giving "matchmaker but for data structures."

✨ NAME ✨

lis_matrix_set_csr — associate the arrays in the CSR format with the matrix 🫶

✨ SYNOPSIS ✨

subroutine lis_matrix_set_csr(LIS_INTEGER nnz, LIS_INTEGER ptr[],
LIS_INTEGER index[], LIS_SCALAR value[], LIS_MATRIX A, LIS_INTEGER ierr);

✨ DESCRIPTION ✨

so the whole vibe here is: you already have your arrays sitting there in CSR format, and this subroutine goes "girl, come here" and associates them with matrix A. that's it. that's the whole job. iconic. 💅

✨ INPUT ✨

• nnz — the number of nonzero elements. literally just the count of how many nonzeros you're bringing to the party. 🔥
• ptr, index, value — the arrays in the CSR format. the whole trio, together, as a unit. main character energy. ✨
• A — the matrix. she's the one receiving the arrays. 🎀

✨ OUTPUT ✨

• A — the matrix, now associated with the arrays. glow up complete. 🌸

✨ NOTE ✨

bestie, listen closely, this is the important part: after lis_matrix_set_csr is called, the function lis_matrix_assemble must be called. don't skip it. not optional. not a suggestion. periodt. 💀

✨ SEE ALSO ✨

• lis(3)
• http://www.ssisc.org/lis/

and that's the whole page, bestie 🦋✨ — this lil writeup came from the man page dated 6 Sep 2012, and the header/footer situation is the classic Lis Library Functions ↔ lis_matrix_set_csr(3f) combo. go call lis_matrix_assemble, okay? i'm obsessed with you. 💜🌈