SRC/zgesc2.f(3)

okay so this is SRC/zgesc2.f(3) from the Library Functions Manual — manual name folded in right here at the top, bestie. 💅✨

✨ NAME ✨

SRC/zgesc2.f — that’s literally the name, no cap. 🎀

🦋 SYNOPSIS 🦋

Functions/Subroutines

subroutine zgesc2 (n, a, lda, rhs, ipiv, jpiv, scale)
    ZGESC2 solves a system of linear equations using the LU
    factorization with complete pivoting computed by sgetc2.

🔥 Function/Subroutine Documentation 🔥

🌸 subroutine zgesc2

subroutine zgesc2 (integer n, complex*16, dimension( lda, * ) a, integer
    lda, complex*16, dimension( * ) rhs, integer, dimension( * ) ipiv,
    integer, dimension( * ) jpiv, double precision scale)

ZGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2. Yes bestie, that’s the whole vibe. 🫶

🎀 Purpose

okay so ZGESC2 solves a system of linear equations

A * X = scale* RHS

with a general N-by-N matrix A using the LU factorization with complete pivoting computed by ZGETC2. 💖

💜 Parameters

• N — N is INTEGER; it’s the number of columns of the matrix A. 🍓
• A — A is COMPLEX*16 array, dimension (LDA, N); on entry, it’s the LU part of the factorization of the n-by-n matrix A computed by ZGETC2: A = P * L * U * Q. 🔥
• LDA — LDA is INTEGER; it’s the leading dimension of the array A, and LDA >= max(1, N). ✨
• RHS — RHS is COMPLEX*16 array, dimension N. On entry, it’s the right hand side vector b. On exit, it’s the solution vector X. 💅
• IPIV — IPIV is INTEGER array, dimension (N). These are the pivot indices; for 1 <= i <= N, row i of the matrix has been interchanged with row IPIV(i). 🌈
• JPIV — JPIV is INTEGER array, dimension (N). These are the pivot indices; for 1 <= j <= N, column j of the matrix has been interchanged with column JPIV(j). 🦋
• SCALE — SCALE is DOUBLE PRECISION; on exit, SCALE contains the scale factor. SCALE is chosen 0 <= SCALE <= 1 to prevent overflow in the solution. 👑

👑 Author

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

🫶 Contributors:

Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.

📍 Definition at line 114 of file zgesc2.f.

⭐ Author ⭐

Generated automatically by Doxygen for LAPACK from the source code.

---

mmkay bestie, that’s the whole page. The footer vibe is LAPACK Version 3.12.0 and SRC/zgesc2.f(3) — byeee 💜🦋✨