SRC/zlapmt.f(3)

NAME

SRC/zlapmt.f — okay so this is the SRC/zlapmt.f(3) page from the Library Functions Manual, and it's all about the zlapmt subroutine. That's the name, bestie. ✨

SYNOPSIS

Functions/Subroutines

subroutine zlapmt (forwrd, m, n, x, ldx, k)

ZLAPMT performs a forward or backward permutation of the columns of a matrix. 💅

Function/Subroutine Documentation

subroutine zlapmt — the full signature

subroutine zlapmt (logical forwrd, integer m, integer n, complex*16,
       dimension( ldx, * ) x, integer ldx, integer, dimension( * ) k)

ZLAPMT performs a forward or backward permutation of the columns of a matrix. 🦋

Purpose

ZLAPMT rearranges the columns of the M by N matrix X as specified by the permutation K(1),K(2),...,K(N) of the integers 1,...,N. No cap.

If FORWRD = .TRUE., that's the forward permutation:

      X(*,K(J)) is moved X(*,J) for J = 1,2,...,N.

If FORWRD = .FALSE., that's the backward permutation:

      X(*,J) is moved to X(*,K(J)) for J = 1,2,...,N.

Parameters

• FORWRD — FORWRD is LOGICAL
  • = .TRUE., forward permutation
  • = .FALSE., backward permutation
• M — M is INTEGER
  • The number of rows of the matrix X. M >= 0. 🫶
• N — N is INTEGER
  • The number of columns of the matrix X. N >= 0. 🌸
• X — X is COMPLEX*16 array, dimension (LDX,N)
  • On entry, the M by N matrix X.
  • On exit, X contains the permuted matrix X. 💖
• LDX — LDX is INTEGER
  • The leading dimension of the array X, LDX >= MAX(1,M). ⭐
• K — K is INTEGER array, dimension (N)
  • On entry, K contains the permutation vector. K is used as internal workspace, but reset to its original value on output. 🎀

Author

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

Definition at line 103 of file zlapmt.f. 📌

Author

Generated automatically by Doxygen for LAPACK from the source code. 💀✨

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okay that's the whole page, bestie — cute little sign-off: this is LAPACK Version 3.12.0, page SRC/zlapmt.f(3). Stay permuted, stay iconic. 💅👑