SRC/DEPRECATED/cgelqs.f(3)

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version 3.12.1 · 2 versions
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💅 SRC/DEPRECATED/cgelqs.f(3) 💅

Library Functions Manual energy, bestie — this page is literally about SRC/DEPRECATED/cgelqs.f, and we are keeping every last detail. No cap. 💖

✨ NAME ✨

  • SRC/DEPRECATED/cgelqs.f — the page/file name, periodt.

🦋 SYNOPSIS 🦋

🎀 Functions/Subroutines

subroutine cgelqs (m, n, nrhs, a, lda, tau, b, ldb, work, lwork, info)
    CGELQS

🌸 Function/Subroutine Documentation 🌸

🦋 subroutine cgelqs (integer m, integer n, integer nrhs, complex, dimension( lda, * ) a, integer lda, complex, dimension( * ) tau, complex, dimension( ldb, * ) b, integer ldb, complex, dimension( lwork ) work, integer lwork, integer info) 🦋

   subroutine cgelqs (integer m, integer n, integer nrhs, complex, dimension(
       lda, * ) a, integer lda, complex, dimension( * ) tau, complex,
       dimension( ldb, * ) b, integer ldb, complex, dimension( lwork ) work,
       integer lwork, integer info)
       CGELQS

💖 Purpose 💖

Okay so the whole assignment is right here, bestie:

!>
!> Compute a minimum-norm solution
!>     min || A*X - B ||
!> using the LQ factorization
!>     A = L*Q
!> computed by CGELQF.
!>

💅 Parameters 💅

  • M — M is INTEGER; the number of rows of matrix A; M >= 0.
  • N — N is INTEGER; the number of columns of matrix A; N >= M >= 0.
  • NRHS — NRHS is INTEGER; the number of columns of B; NRHS >= 0.
  • A — A is COMPLEX array, dimension (LDA,N); details of the LQ factorization of the original matrix A as returned by CGELQF.
  • LDA — LDA is INTEGER; the leading dimension of the array A; LDA >= M.
  • TAU — TAU is COMPLEX array, dimension (M); details of the orthogonal matrix Q.
  • B — B is COMPLEX array, dimension (LDB,NRHS); on entry, the m-by-nrhs right hand side matrix B; on exit, the n-by-nrhs solution matrix X.
  • LDB — LDB is INTEGER; the leading dimension of the array B; LDB >= N.
  • WORK — WORK is COMPLEX array, dimension (LWORK).
  • LWORK — LWORK is INTEGER; the length of the array WORK; LWORK must be at least NRHS, and should be at least NRHS*NB, where NB is the block size for this environment.
  • INFO — INFO is INTEGER
    • = 0: successful exit
    • < 0: if INFO = -i, the i-th argument had an illegal value

👑 Author 👑

Shoutout to the institutions, obviously:

  • Univ. of Tennessee
  • Univ. of California Berkeley
  • Univ. of Colorado Denver
  • NAG Ltd.
Definition at line 119 of file cgelqs.f.

👑 Author 👑

And one more author note, because Doxygen said so:

Generated automatically by Doxygen for LAPACK from the source code.

xoxo, bestie 💖 — source/version: LAPACK, Version 3.12.0 — page: SRC/DEPRECATED/cgelqs.f(3). Mwah. 🎀

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