lascl2(3)

📦
version 3.12.1 · 9 versions
, in arch rolling

🌸 NAME 🌸

Okay bestie, this is lascl2(3) — the NAME line is literally lascl2 - lascl2: diagonal scale matrix, A = D A. It’s giving diagonal-scaling main character energy, no cap 💅.

🦋 SYNOPSIS 🦋

✨ Functions ✨

  • subroutine clascl2 (m, n, d, x, ldx) — CLASCL2 performs diagonal scaling on a matrix.
  • subroutine dlascl2 (m, n, d, x, ldx) — DLASCL2 performs diagonal scaling on a matrix.
  • subroutine slascl2 (m, n, d, x, ldx) — SLASCL2 performs diagonal scaling on a matrix.
  • subroutine zlascl2 (m, n, d, x, ldx) — ZLASCL2 performs diagonal scaling on a matrix.

💖 Detailed Description 💖

The original page doesn’t add any extra prose under this heading, bestie — it goes straight into the function lore ☕.

🔥 Function Documentation 🔥

🧚 subroutine clascl2 (integer m, integer n, real, dimension( * ) d, complex, dimension( ldx, * ) x, integer ldx)

CLASCL2 performs diagonal scaling on a matrix.

Purpose

!>
!> CLASCL2 performs a diagonal scaling on a matrix:
!>   x <-- D * x
!> where the diagonal REAL matrix D is stored as a matrix.
!>
!> Eventually to be replaced by BLAS_cge_diag_scale in the new BLAS
!> standard.
!>

Parameters

  • M — M is INTEGER; The number of rows of D and X. M >= 0.
  • N — N is INTEGER; The number of columns of X. N >= 0.
  • D — D is REAL array, length M; Diagonal matrix D, stored as a vector of length M.
  • X — X is COMPLEX array, dimension (LDX,N); On entry, the matrix X to be scaled by D. On exit, the scaled matrix.
  • LDX — LDX is INTEGER; The leading dimension of the matrix X. LDX >= M.

Author

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

Definition at line 90 of file clascl2.f.

🦄 subroutine dlascl2 (integer m, integer n, double precision, dimension( * ) d, double precision, dimension( ldx, * ) x, integer ldx)

DLASCL2 performs diagonal scaling on a matrix.

Purpose

!>
!> DLASCL2 performs a diagonal scaling on a matrix:
!>   x <-- D * x
!> where the diagonal matrix D is stored as a vector.
!>
!> Eventually to be replaced by BLAS_dge_diag_scale in the new BLAS
!> standard.
!>

Parameters

  • M — M is INTEGER; The number of rows of D and X. M >= 0.
  • N — N is INTEGER; The number of columns of X. N >= 0.
  • D — D is DOUBLE PRECISION array, length M; Diagonal matrix D, stored as a vector of length M.
  • X — X is DOUBLE PRECISION array, dimension (LDX,N); On entry, the matrix X to be scaled by D. On exit, the scaled matrix.
  • LDX — LDX is INTEGER; The leading dimension of the matrix X. LDX >= M.

Author

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

Definition at line 89 of file dlascl2.f.

🎀 subroutine slascl2 (integer m, integer n, real, dimension( * ) d, real, dimension( ldx, * ) x, integer ldx)

SLASCL2 performs diagonal scaling on a matrix.

Purpose

!>
!> SLASCL2 performs a diagonal scaling on a matrix:
!>   x <-- D * x
!> where the diagonal matrix D is stored as a vector.
!>
!> Eventually to be replaced by BLAS_sge_diag_scale in the new BLAS
!> standard.
!>

Parameters

  • M — M is INTEGER; The number of rows of D and X. M >= 0.
  • N — N is INTEGER; The number of columns of X. N >= 0.
  • D — D is REAL array, length M; Diagonal matrix D, stored as a vector of length M.
  • X — X is REAL array, dimension (LDX,N); On entry, the matrix X to be scaled by D. On exit, the scaled matrix.
  • LDX — LDX is INTEGER; The leading dimension of the matrix X. LDX >= M.

Author

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

Definition at line 89 of file slascl2.f.

🦋 subroutine zlascl2 (integer m, integer n, double precision, dimension( * ) d, complex*16, dimension( ldx, * ) x, integer ldx)

ZLASCL2 performs diagonal scaling on a matrix.

Purpose

!>
!> ZLASCL2 performs a diagonal scaling on a matrix:
!>   x <-- D * x
!> where the DOUBLE PRECISION diagonal matrix D is stored as a vector.
!>
!> Eventually to be replaced by BLAS_zge_diag_scale in the new BLAS
!> standard.
!>

Parameters

  • M — M is INTEGER; The number of rows of D and X. M >= 0.
  • N — N is INTEGER; The number of columns of X. N >= 0.
  • D — D is DOUBLE PRECISION array, length M; Diagonal matrix D, stored as a vector of length M.
  • X — X is COMPLEX*16 array, dimension (LDX,N); On entry, the matrix X to be scaled by D. On exit, the scaled matrix.
  • LDX — LDX is INTEGER; The leading dimension of the matrix X. LDX >= M.

Author

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

Definition at line 90 of file zlascl2.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

✨ That’s the whole page, bestie! The footer doesn’t list a date, but the source/version is LAPACK, Version 3.12.0, and you’re reading lascl2(3). Stay diagonal 💅🫶

📦 where this page comes from