TESTING/LIN/sdrvgt.f(3)

🌸 TESTING/LIN/sdrvgt.f 🌸

okay so bestie, welcome to another page from the Library Functions Manual — this one's all about testing the tridiagonal solver routines, and honestly? it's giving "QA queen" energy 💅

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✨ NAME ✨

TESTING/LIN/sdrvgt.f — the file we're fangirling over today 🎀

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✨ SYNOPSIS ✨

💫 Functions/Subroutines

subroutine sdrvgt (dotype, nn, nval, nrhs, thresh, tsterr, a, af, b, x,
    xact, work, rwork, iwork, nout)
    SDRVGT

that's the whole vibe, no cap — one subroutine, one job 🫶

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✨ Function/Subroutine Documentation ✨

here's the full signature, character for character, because we do not mess with the details 🔥

subroutine sdrvgt (logical, dimension( * ) dotype, integer nn, integer,
    dimension( * ) nval, integer nrhs, real thresh, logical tsterr, real,
    dimension( * ) a, real, dimension( * ) af, real, dimension( * ) b, real,
    dimension( * ) x, real, dimension( * ) xact, real, dimension( * ) work,
    real, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

SDRVGT — main character name, obviously 😌

🌈 Purpose:

!>
!> SDRVGT tests SGTSV and -SVX.
!>

literally what it says on the tin — it's the test driver for SGTSV and -SVX. icon behavior ⭐

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🎀 Parameters 🎀

every single one, in order, no skips — let's go 💜

• DOTYPE — LOGICAL array, dimension (NTYPES). this is the "which tests do we even run" checklist ✨. The matrix types to be used for testing. Matrices of type j (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used. so like, you literally pick your fighters 💅
• NN — INTEGER. The number of values of N contained in the vector NVAL. it's the count, bestie, that's it 🍓
• NVAL — INTEGER array, dimension (NN). The values of the matrix dimension N. the actual sizes we're testing at 🌸
• NRHS — INTEGER. The number of right hand sides, NRHS >= 0. 💖 note the constraint, fr fr.
• THRESH — REAL. The threshold value for the test ratios. A result is included in the output file if RESULT >= THRESH. To have every test ratio printed, use THRESH = 0. so if you're nosy and want everything in the log, set it to zero and let it spill 👑💀
• TSTERR — LOGICAL. Flag that indicates whether error exits are to be tested. yes we're testing the failure paths too, that's called range 🔥
• A — REAL array, dimension (NMAX*4). 🧚
• AF — REAL array, dimension (NMAX*4). 🧚
• B — REAL array, dimension (NMAX*NRHS). 🌈
• X — REAL array, dimension (NMAX*NRHS). 🌈
• XACT — REAL array, dimension (NMAX*NRHS). 🌈
• WORK — REAL array, dimension (NMAX*max(3,NRHS)). the scratch space bestie, don't question it 💅
• RWORK — REAL array, dimension (max(NMAX,2*NRHS)). more scratch space, real kind this time 😭
• IWORK — INTEGER array, dimension (2*NMAX). scratch space but make it integers 🫶
• NOUT — INTEGER. The unit number for output. where the tea gets written 📝

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👑 Author 👑

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

the whole squad contributed, we love a collab 💜

definition drop: Definition at line 137 of file sdrvgt.f. ✨

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🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code. (yes the robot wrote this part, not me 🙈)

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aaaand that's the page, bestie 🎀💖 this was LAPACK, Version 3.12.0, dated TESTING/LIN/sdrvgt.f(3) — thanks for reading, mwah 💅✨