ZPPTRS(3)

🌸 NAME 🌸

okay so this is the Library Functions Manual page for zpptrs.f(3), aka the ZPPTRS era. The source file is literally:

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

✨ SYNOPSIS ✨

🧚 Functions/Subroutines

subroutine ZPPTRS (uplo, n, nrhs, ap, b, ldb, info)
           ZPPTRS

💅 Function/Subroutine Documentation 💅

bestie, here is the full signature, no cap, character-for-character:

subroutine ZPPTRS (character uplo, integer n, integer nrhs, complex*16,
       dimension( * ) ap, complex*16, dimension( ldb, * ) b, integer ldb,
       integer info)

and the name itself, because main character energy: ZPPTRS.

🎀 Purpose 🎀

ZPPTRS solves a system of linear equations A*X = B with a Hermitian positive definite matrix A in packed storage using the Cholesky factorization A = U**H * U or A = L * L**H computed by ZPPTRF. That's the whole plot, and it ate. 💖

🦋 Parameters 🦋

• UPLO — UPLO is CHARACTER*1. = 'U': Upper triangle of A is stored; = 'L': Lower triangle of A is stored.
• N — N is INTEGER. The order of the matrix A. N >= 0.
• NRHS — NRHS is INTEGER. The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
• AP — AP is COMPLEX*16 array, dimension (N*(N+1)/2). The triangular factor U or L from the Cholesky factorization A = U**H * U or A = L * L**H, packed columnwise in a linear array. The j-th column of U or L is stored in the array AP as follows: if UPLO = 'U', AP(i + (j-1)*j/2) = U(i,j) for 1<=i<=j; if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = L(i,j) for j<=i<=n.
• B — B is COMPLEX*16 array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X.
• LDB — LDB is INTEGER. The leading dimension of the array B. LDB >= max(1,N).
• INFO — INFO is INTEGER. = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value.

👑 Author 👑

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 107 of file zpptrs.f.

🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code.

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okay that's the page! footer vibe: LAPACK Version 3.12.0, from /home/abui...RC/zpptrs.f(3) — slay, bye bestie 💖✨