/home/abui...orcond_c.f(3)

💅 NAME 💅

ok so bestie, this page lives at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/cla_porcond_c.f — like, that's the whole name of this thing, no cap. It's part of the Library Functions Manual, and it's literally the man page for CLA_PORCOND_C. 🎀

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✨ SYNOPSIS ✨

🦋 Functions/Subroutines

• real function CLA_PORCOND_C (uplo, n, a, lda, af, ldaf, c, capply, info, work, rwork) — bestie, this one computes the infinity norm condition number of op(A)*inv(diag(c)) for Hermitian positive-definite matrices. iconic behavior, honestly.

real function CLA_PORCOND_C (uplo, n, a, lda, af, ldaf, c, capply, info,
    work, rwork)

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🌸 Function/Subroutine Documentation 🌸

real function CLA_PORCOND_C (character uplo, integer n, complex, dimension(
    lda, * ) a, integer lda, complex, dimension( ldaf, * ) af, integer ldaf,
    real, dimension( * ) c, logical capply, integer info, complex,
    dimension( * ) work, real, dimension( * ) rwork)

okay so, what does she do? CLA_PORCOND_C computes the infinity norm condition number of op(A)*inv(diag(c)) for Hermitian positive-definite matrices. that's the whole vibe. 🫶

🎀 Purpose

!>
!>    CLA_PORCOND_C Computes the infinity norm condition number of
!>    op(A) * inv(diag(C)) where C is a REAL vector
!>

🌈 Parameters

• UPLO

!>          UPLO is CHARACTER*1
!>       = 'U':  Upper triangle of A is stored;
!>       = 'L':  Lower triangle of A is stored.
!>

so like, 'U' means the upper triangle of A is stored, and 'L' means the lower triangle of A is stored. pick your fighter. 💅

• N

!>          N is INTEGER
!>     The number of linear equations, i.e., the order of the
!>     matrix A.  N >= 0.
!>

the number of linear equations — i.e. the order of the matrix A. and she said N >= 0, okay? respect it. 😤

• A

!>          A is COMPLEX array, dimension (LDA,N)
!>     On entry, the N-by-N matrix A
!>

on entry, this is literally the N-by-N matrix A. main character energy. 👑

• LDA

!>          LDA is INTEGER
!>     The leading dimension of the array A.  LDA >= max(1,N).
!>

the leading dimension of the array A, and it's gotta be LDA >= max(1,N). no negotiating. 🚩

• AF

!>          AF is COMPLEX array, dimension (LDAF,N)
!>     The triangular factor U or L from the Cholesky factorization
!>     A = U**H*U or A = L*L**H, as computed by CPOTRF.
!>

this is the triangular factor U or L from the Cholesky factorization A = U**H*U or A = L*L**H, as computed by CPOTRF. she ate that up fr fr. 🔥

• LDAF

!>          LDAF is INTEGER
!>     The leading dimension of the array AF.  LDAF >= max(1,N).
!>

leading dimension of the array AF, and yes, LDAF >= max(1,N). same energy as LDA, honestly. ✨

• C

!>          C is REAL array, dimension (N)
!>     The vector C in the formula op(A) * inv(diag(C)).
!>

the vector C in the formula op(A) * inv(diag(C)). she's in the formula, she's the moment. 💖

• CAPPLY

!>          CAPPLY is LOGICAL
!>     If .TRUE. then access the vector C in the formula above.
!>

if .TRUE. then bestie accesses the vector C in the formula above. if not… well, she doesn't. 🤷‍♀️

• INFO

!>          INFO is INTEGER
!>       = 0:  Successful exit.
!>     i > 0:  The ith argument is invalid.
!>

= 0 means a successful exit, slay. i > 0 means the *i*th argument is invalid — so like, check yourself before you wreck yourself. 💀

• WORK

!>          WORK is COMPLEX array, dimension (2*N).
!>     Workspace.
!>

just workspace, dimension (2*N). she's there to help. 🧚

• RWORK

!>          RWORK is REAL array, dimension (N).
!>     Workspace.
!>

also just workspace, dimension (N). team player fr. 🍓

💜 Author

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

definition at line 128 of file cla_porcond_c.f. noted. 📝

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⭐ Author ⭐

generated automatically by Doxygen for LAPACK from the source code. so like, nobody hand-wrote this, the computer did it. still ate tho. 💅

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aaaand that's the whole page bestie! 🦋 LAPACK · Version 3.12.0 — shoutout to the header line /home/abui...orcond_c.f(3) which is literally just the filename being dramatic. byeee 💖✨🎀