SRC/zhptrs.f(3)

✨ NAME ✨

SRC/zhptrs.f — okay bestie, this is the page for zhptrs, and it lives in the Library Functions Manual.

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine zhptrs (uplo, n, nrhs, ap, ipiv, b, ldb, info)
    ZHPTRS

🌈 Function/Subroutine Documentation 🌈

zhptrs — yes, the main character

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

🎯 Purpose

Okay so ZHPTRS 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 ZHPTRF. 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*16 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 ZHPTRF, 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 ZHPTRF.
• 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 114 of file zhptrs.f.

👑 Author (yes, again)

Generated automatically by Doxygen for LAPACK from the source code.

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