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

🎀 NAME 🎀

bestie, this page is from the Library Functions Manual, and it's filed under /home/abui...yrcond_x.f(3). The NAME itself is this absolute-path icon, no cap:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/cla_syrcond_x.f

---

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

• real function CLA_SYRCOND_X (uplo, n, a, lda, af, ldaf, ipiv, x, info, work, rwork) — CLA_SYRCOND_X computes the infinity norm condition number of op(A)*diag(x) for symmetric indefinite matrices.

---

💜 Function/Subroutine Documentation 💜

real function CLA_SYRCOND_X (character uplo, integer n, complex, dimension(
       lda, * ) a, integer lda, complex, dimension( ldaf, * ) af, integer ldaf,
       integer, dimension( * ) ipiv, complex, dimension( * ) x, integer info,
       complex, dimension( * ) work, real, dimension( * ) rwork)

CLA_SYRCOND_X computes the infinity norm condition number of op(A)*diag(x) for symmetric indefinite matrices.

🎯 Purpose:

this is the literal purpose block, bestie:

!>
!>    CLA_SYRCOND_X Computes the infinity norm condition number of
!>    op(A) * diag(X) where X is a COMPLEX vector.
!>

🌸 Parameters 🌸

okay so here's the full parameter lineup, no skips:

• UPLO — UPLO is CHARACTER*1; the vibes are:
  • = 'U': Upper triangle of A is stored;
  • = 'L': Lower triangle of A is stored.
• N — N is INTEGER; the number of linear equations, i.e., the order of the matrix A. N >= 0.
• A — A is COMPLEX array, dimension (LDA,N); on entry, the N-by-N matrix A.
• LDA — LDA is INTEGER; the leading dimension of the array A. LDA >= max(1,N).
• AF — AF is COMPLEX array, dimension (LDAF,N); the block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by CSYTRF.
• LDAF — LDAF is INTEGER; the leading dimension of the array AF. LDAF >= max(1,N).
• IPIV — IPIV is INTEGER array, dimension (N); details of the interchanges and the block structure of D as determined by CSYTRF.
• X — X is COMPLEX array, dimension (N); the vector X in the formula op(A) * diag(X).
• INFO — INFO is INTEGER; = 0: Successful exit. and i > 0: The ith argument is invalid.
• WORK — WORK is COMPLEX array, dimension (2*N). Workspace.
• RWORK — RWORK is REAL array, dimension (N). Workspace.

👑 Author 👑

author credits, periodt:

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

Definition at line 129 of file cla_syrcond_x.f.

---

🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code.

---

and that's the whole page, bestie 🫶 — footer sign-off: LAPACK Version 3.12.0, page /home/abui...yrcond_x.f(3). The page doesn't give an extra date, so we're not inventing one 💅.