SGESC2(3)

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/sgesc2.f

Okay so this page is sgesc2.f(3) from the Library Functions Manual, and the file is the exact path above. It's giving LAPACK subroutine realness, bestie. ✨

✨ SYNOPSIS ✨

🛠️ Functions/Subroutines 🛠️

• subroutine SGESC2 (n, a, lda, rhs, ipiv, jpiv, scale) — SGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

💖 Function/Subroutine Documentation 💖

subroutine SGESC2 (integer n, real, dimension( lda, * ) a, integer lda,
       real, dimension( * ) rhs, integer, dimension( * ) ipiv, integer,
       dimension( * ) jpiv, real scale)

SGESC2 solves a system of linear equations using the LU factorization with complete pivoting computed by sgetc2.

✨ Purpose: ✨

Okay so the purpose is iconic: SGESC2 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 SGETC2. Periodt. 💅

🌸 Parameters 🌸

• N — N is INTEGER; the order of the matrix A.
• A — A is REAL array, dimension (LDA,N). On entry, the LU part of the factorization of the n-by-n matrix A computed by SGETC2: A = P * L * U * Q.
• LDA — LDA is INTEGER; the leading dimension of the array A. LDA >= max(1, N).
• RHS — RHS is REAL array, dimension (N). On entry, the right hand side vector b. On exit, the solution vector X.
• IPIV — IPIV is INTEGER array, dimension (N). 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). The pivot indices; for 1 <= j <= N, column j of the matrix has been interchanged with column JPIV(j).
• SCALE — SCALE is REAL. 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 113 of file sgesc2.f.

📝 Author 📝

Generated automatically by Doxygen for LAPACK from the source code.

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okay that's the page, bestie 💖 Footer sign-off: LAPACK Version 3.12.0 · page path /home/abui...RC/sgesc2.f(3) ✨ (this footer has no separate date printed, so I'm not inventing one)