SRC/cheswapr.f(3)

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version 3.12.1 · 7 versions
, in arch rolling

bestie, welcome to the <pink>SRC/cheswapr.f(3)</pink> manual page — yes, the whole entry, and it’s giving “small routine, big Hermitian energy.” 💖

🌸 NAME 🌸

SRC/cheswapr.f

💅 SYNOPSIS 💅

🧚 Functions/Subroutines 🧚

  • subroutine cheswapr (uplo, n, a, lda, i1, i2) — CHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix. ✨

🌟 Function/Subroutine Documentation 🌟

💜 subroutine cheswapr 💜

subroutine cheswapr (character uplo, integer n, complex, dimension( lda, n )
       a, integer lda, integer i1, integer i2)

CHESWAPR applies an elementary permutation on the rows and columns of a Hermitian matrix. 🫶

🎀 Purpose 🎀

CHESWAPR applies an elementary permutation on the rows and the columns of a hermitian matrix. 💫

🍓 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**T;
  • = 'L': Lower triangular, form is A = L*D*L**T.

N

N is INTEGER. The order of the matrix A. N >= 0.

A

A is COMPLEX array, dimension (LDA,N). On entry, the NB diagonal matrix D and the multipliers used to obtain the factor U or L as computed by CSYTRF.

On exit, if INFO = 0, the (symmetric) inverse of the original matrix. If UPLO = 'U', the upper triangular part of the inverse is formed and the part of A below the diagonal is not referenced; if UPLO = 'L' the lower triangular part of the inverse is formed and the part of A above the diagonal is not referenced.

LDA

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

I1

I1 is INTEGER. Index of the first row to swap.

I2

I2 is INTEGER. Index of the second row to swap.

👑 Author 👑

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

Definition at line 101 of file cheswapr.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

that’s the whole page, bestie — from LAPACK, Version 3.12.0, living at SRC/cheswapr.f(3); the page doesn’t list a date, so no invented date era. 💖🎀

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