SRC/chptrs.f(3)

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version 3.12.1 · 7 versions
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💅 SRC/chptrs.f(3) 💅

okay bestie, welcome to this little corner of the Library Functions Manual — we're doing LAPACK, we're doing packed matrices, and we're doing it with main character energy. 🎀✨

🌸 NAME 🌸

SRC/chptrs.f — periodt, that's the file. 💖

✨ SYNOPSIS ✨

🌈 Functions/Subroutines 🌈

subroutine chptrs (uplo, n, nrhs, ap, ipiv, b, ldb, info)
    CHPTRS

💖 Function/Subroutine Documentation 💖

🦋 subroutine chptrs 🦋

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

and the routine name is CHPTRS — say it with your chest. 👑

🎯 Purpose 🎯

CHPTRS solves a system of linear equations A*X = B with a complex Hermitian matrix A stored in packed format using the factorization A = U*D*U**H or A = L*D*L**H computed by CHPTRF. slay. 💅

🧸 Parameters 🧸

  • UPLO — UPLO is CHARACTER*1. It specifies whether the details of the factorization are stored as an upper or lower triangular matrix. = 'U': Upper triangular, form is A = U*D*U**H; = 'L': Lower triangular, form is A = L*D*L**H.
  • 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 array, dimension (N*(N+1)/2); the block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by CHPTRF, stored as a packed triangular matrix.
  • IPIV — IPIV is INTEGER array, dimension (N); details of the interchanges and the block structure of D as determined by CHPTRF.
  • B — B is COMPLEX 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 114 of file chptrs.f.

🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code. automatic queen behavior, no cap. 👑

💖 That's the whole vibe: LAPACK, Version 3.12.0, source SRC/chptrs.f(3). Bye bestie — go be the main character of your linear algebra. 🎀✨

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