TESTING/LIN/cget01.f(3)

💖 NAME 💖

TESTING/LIN/cget01.f — ok bestie, this is the manual page for TESTING/LIN/cget01.f, from the Library Functions Manual ✨

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✨ SYNOPSIS ✨

Functions/Subroutines

• subroutine cget01 (m, n, a, lda, afac, ldafac, ipiv, rwork, resid) — CGET01

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🎀 Function/Subroutine Documentation 🎀

subroutine cget01 (integer m, integer n, complex, dimension( lda, * ) a, integer lda, complex, dimension( ldafac, * ) afac, integer ldafac, integer, dimension( * ) ipiv, real, dimension( * ) rwork, real resid)

CGET01

🌸 Purpose 🌸

CGET01 reconstructs a matrix A from its L*U factorization and computes the residual

norm(L*U - A) / ( N * norm(A) * EPS ),

where EPS is the machine epsilon. No cap, that’s literally the whole vibe check 💅

🦋 Parameters 🦋

• M — M is INTEGER. The number of rows of the matrix A. M >= 0 ✨
• N — N is INTEGER. The number of columns of the matrix A. N >= 0 🌸
• A — A is COMPLEX array, dimension (LDA,N). The original M x N matrix A. 💖
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,M) 🎀
• AFAC — AFAC is COMPLEX array, dimension (LDAFAC,N). The factored form of the matrix A. AFAC contains the factors L and U from the L*U factorization as computed by CGETRF. Overwritten with the reconstructed matrix, and then with the difference L*U - A. 🫶
• LDAFAC — LDAFAC is INTEGER. The leading dimension of the array AFAC. LDAFAC >= max(1,M) ⭐
• IPIV — IPIV is INTEGER array, dimension (N). The pivot indices from CGETRF. 🙈
• RWORK — RWORK is REAL array, dimension (M) 🌈
• RESID — RESID is REAL. norm(L*U - A) / ( N * norm(A) * EPS ) 💀

👑 Author 👑

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

Definition at line 106 of file cget01.f.

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🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code.

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ok so that’s the whole page, bestie 🧚 and for the cute sign-off: this is from LAPACK Version 3.12.0, source page TESTING/LIN/cget01.f(3) — iconic, honestly 💜