TESTING/EIG/clarfy.f(3)

📦
version 3.12.1 · 7 versions
, in arch rolling

okay so bestie, welcome to TESTING/EIG/clarfy.f(3) from the Library Functions Manual 💅 this is the page for the clarfy subroutine and we're gonna get into it, no cap.

🌸 NAME 🌸

TESTING/EIG/clarfy.f — that's the whole name, bestie. iconic. 🎀

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

  • subroutine clarfy (uplo, n, v, incv, tau, c, ldc, work) — CLARFY

💖 Function/Subroutine Documentation 💖

   subroutine clarfy (character uplo, integer n, complex, dimension( * ) v,
       integer incv, complex tau, complex, dimension( ldc, * ) c, integer ldc,
       complex, dimension( * ) work)

CLARFY

🌟 Purpose 🌟

CLARFY applies an elementary reflector — also called a Householder matrix, H — to an n x n Hermitian matrix C, from both the left and the right. periodt. 💫

H is represented in the form

H = I - tau * v * v'

where tau is a scalar and v is a vector.

If tau is zero, then H is taken to be the unit matrix. yes bestie, that's the vibe. 🫶

🌈 Parameters 🌈

  • UPLO — CHARACTER*1. Specifies whether the upper or lower triangular part of the Hermitian matrix C is stored. = 'U': Upper triangle. = 'L': Lower triangle. 🦋
  • N — INTEGER. The number of rows and columns of the matrix C. N >= 0. 💖
  • V — COMPLEX array, dimension (1 + (N-1)*abs(INCV)). The vector v as described above. ✨
  • INCV — INTEGER. The increment between successive elements of v. INCV must not be zero. 🚨
  • TAU — COMPLEX. The value tau as described above. 💅
  • C — COMPLEX array, dimension (LDC, N). On entry, the matrix C. On exit, C is overwritten by H * C * H'. 🔥
  • LDC — INTEGER. The leading dimension of the array C. LDC >= max( 1, N ). 👑
  • WORK — COMPLEX array, dimension (N). 🌸

💜 Author 💜

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

Definition at line: 107 of file clarfy.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code. 🧚

Catch you later, bestie — this page is LAPACK, Version 3.12.0, from TESTING/EIG/clarfy.f(3), and the footer didn't give a date, so that's the whole vibe 😭💖🫶

📦 where this page comes from