TESTING/EIG/dlsets.f(3)

🌸 TESTING/EIG/dlsets.f(3) 🌸

okay so this page is from the Library Functions Manual, and it’s all about TESTING/EIG/dlsets.f — a LAPACK testing routine. main character energy for a subroutine, honestly 💅

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🦋 NAME 🦋

TESTING/EIG/dlsets.f — yes bestie, that’s literally the name, and we’re obsessed with the specificity 🎀

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✨ SYNOPSIS ✨

💫 Functions/Subroutines

• subroutine dlsets — the one and only routine here, and its name is DLSETS. slay.

       subroutine dlsets (m, p, n, a, af, lda, b, bf, ldb, c, cf, d, df, x,
           work, lwork, rwork, result)

DLSETS

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🔥 Function/Subroutine Documentation 🔥

subroutine dlsets (integer m, integer p, integer n, double precision,
       dimension( lda, * ) a, double precision, dimension( lda, * ) af, integer
       lda, double precision, dimension( ldb, * ) b, double precision,
       dimension( ldb, * ) bf, integer ldb, double precision, dimension( * ) c,
       double precision, dimension( * ) cf, double precision, dimension( * ) d,
       double precision, dimension( * ) df, double precision, dimension( * ) x,
       double precision, dimension( lwork ) work, integer lwork, double
       precision, dimension( * ) rwork, double precision, dimension( 2 )
       result)

DLSETS — that’s the routine, periodt 💖

🌟 Purpose

DLSETS tests DGGLSE — a subroutine for solving linear equality constrained least square problem (LSE). no cap, that’s the whole purpose and it ate 🫶

🎀 Parameters

• M — M is INTEGER. The number of rows of the matrix A. M >= 0.
• P — P is INTEGER. The number of rows of the matrix B. P >= 0.
• N — N is INTEGER. The number of columns of the matrices A and B. N >= 0.
• A — A is DOUBLE PRECISION array, dimension (LDA,N). The M-by-N matrix A.
• AF — AF is DOUBLE PRECISION array, dimension (LDA,N). that’s the whole description in the source, bestie 🦋
• LDA — LDA is INTEGER. The leading dimension of the arrays A, AF, Q and R. LDA >= max(M,N).
• B — B is DOUBLE PRECISION array, dimension (LDB,N). The source says “The P-by-N matrix A.” — yes, it says A there, and I’m not fixing it 😭
• BF — BF is DOUBLE PRECISION array, dimension (LDB,N). no extra lore in the source, just vibes ✨
• LDB — LDB is INTEGER. The leading dimension of the arrays B, BF, V and S. LDB >= max(P,N).
• C — C is DOUBLE PRECISION array, dimension( M ). the vector C in the LSE problem.
• CF — CF is DOUBLE PRECISION array, dimension( M ). short and sweet.
• D — D is DOUBLE PRECISION array, dimension( P ). the vector D in the LSE problem.
• DF — DF is DOUBLE PRECISION array, dimension( P ). that’s it, that’s the parameter 🎀
• X — X is DOUBLE PRECISION array, dimension( N ). solution vector X in the LSE problem.
• WORK — WORK is DOUBLE PRECISION array, dimension (LWORK).
• LWORK — LWORK is INTEGER. The dimension of the array WORK.
• RWORK — RWORK is DOUBLE PRECISION array, dimension (M).
• RESULT — RESULT is DOUBLE PRECISION array, dimension (2). The test ratios:

RESULT(1) = norm( A*x - c )/ norm(A)*norm(X)*EPS
RESULT(2) = norm( B*x - d )/ norm(B)*norm(X)*EPS

👑 Author

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

Definition at line 149 of file dlsets.f.

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💖 Author 💖

Generated automatically by Doxygen for LAPACK from the source code.

💅 cute little sign-off: this page is from LAPACK Version 3.12.0 for TESTING/EIG/dlsets.f(3) — the footer doesn’t give a date, so no date to spill, bestie 🌈🫶