TESTING/LIN/dchkpp.f(3)

💖 TESTING/LIN/dchkpp.f(3) 💖

okay so this page is from the Library Functions Manual, and it is literally all about TESTING/LIN/dchkpp.f — a Fortran testing routine named DCHKPP. bestie, it’s giving “deep LAPACK test file energy” and i’m obsessed 💅✨

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✨ NAME ✨

TESTING/LIN/dchkpp.f — that’s the name on the tin, no cap. This whole page is about that file 🎀

🌸 SYNOPSIS 🌸

💫 Functions/Subroutines 💫

       subroutine dchkpp (dotype, nn, nval, nns, nsval, thresh, tsterr, nmax,
           a, afac, ainv, b, x, xact, work, rwork, iwork, nout)
           DCHKPP

That’s the short version: the subroutine is dchkpp, and the all-caps function/subroutine name is DCHKPP 💖

🧚 Function/Subroutine Documentation 🧚

   subroutine dchkpp (logical, dimension( * ) dotype, integer nn, integer,
       dimension( * ) nval, integer nns, integer, dimension( * ) nsval, double
       precision thresh, logical tsterr, integer nmax, double precision,
       dimension( * ) a, double precision, dimension( * ) afac, double
       precision, dimension( * ) ainv, double precision, dimension( * ) b,
       double precision, dimension( * ) x, double precision, dimension( * )
       xact, double precision, dimension( * ) work, double precision,
       dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)
       DCHKPP

DCHKPP — yes, that’s the routine, and yes, she has a lot of arguments. main character energy fr fr 🌟

🎯 Purpose 🎯

The whole point, no cap: DCHKPP tests DPPTRF, -TRI, -TRS, -RFS, and -CON 🫶🔥

📝 Parameters 📝

• DOTYPE — DOTYPE is a LOGICAL array, dimension (NTYPES). These are 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. 🎀
• NN — NN is INTEGER. It’s the number of values of N contained in the vector NVAL. ✨
• NVAL — NVAL is an INTEGER array, dimension (NN). These are the values of the matrix dimension N. 💖
• NNS — NNS is INTEGER. It’s the number of values of NRHS contained in the vector NSVAL. 🌸
• NSVAL — NSVAL is an INTEGER array, dimension (NNS). These are the values of the number of right hand sides NRHS. 🦋
• THRESH — THRESH is DOUBLE PRECISION. It’s 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. 👑
• TSTERR — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested. 💀
• NMAX — NMAX is INTEGER. The maximum value permitted for N, used in dimensioning the work arrays. 🔥
• A — A is a DOUBLE PRECISION array, dimension (NMAX*(NMAX+1)/2). 🍓
• AFAC — AFAC is a DOUBLE PRECISION array, dimension (NMAX*(NMAX+1)/2). 💜
• AINV — AINV is a DOUBLE PRECISION array, dimension (NMAX*(NMAX+1)/2). 🌈
• B — B is a DOUBLE PRECISION array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL. ⭐
• X — X is a DOUBLE PRECISION array, dimension (NMAX*NSMAX). 🎀
• XACT — XACT is a DOUBLE PRECISION array, dimension (NMAX*NSMAX). 💖
• WORK — WORK is a DOUBLE PRECISION array, dimension (NMAX*max(3,NSMAX)). 🧚
• RWORK — RWORK is a DOUBLE PRECISION array, dimension (max(NMAX,2*NSMAX)). 🌸
• IWORK — IWORK is an INTEGER array, dimension (NMAX). 🦋
• NOUT — NOUT is INTEGER. The unit number for output. 👑

👑 Author 👑

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

📌 Definition at line 📌

Definition at line 160 of file dchkpp.f.

🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code.

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mwah 💋 that’s the whole page, bestie. It came from LAPACK Version 3.12.0, and the footer stamp on this one is TESTING/LIN/dchkpp.f(3). bye boo 🫶✨