zlaset (l) - Linux Manuals

zlaset: initializes a 2-D array A to BETA on the diagonal and ALPHA on the offdiagonals

NAME

ZLASET - initializes a 2-D array A to BETA on the diagonal and ALPHA on the offdiagonals

SYNOPSIS

SUBROUTINE ZLASET(
UPLO, M, N, ALPHA, BETA, A, LDA )

    
CHARACTER UPLO

    
INTEGER LDA, M, N

    
COMPLEX*16 ALPHA, BETA

    
COMPLEX*16 A( LDA, * )

PURPOSE

ZLASET initializes a 2-D array A to BETA on the diagonal and ALPHA on the offdiagonals.

ARGUMENTS

UPLO (input) CHARACTER*1
Specifies the part of the matrix A to be set. = aqUaq: Upper triangular part is set. The lower triangle is unchanged. = aqLaq: Lower triangular part is set. The upper triangle is unchanged. Otherwise: All of the matrix A is set.
M (input) INTEGER
On entry, M specifies the number of rows of A.
N (input) INTEGER
On entry, N specifies the number of columns of A.
ALPHA (input) COMPLEX*16
All the offdiagonal array elements are set to ALPHA.
BETA (input) COMPLEX*16
All the diagonal array elements are set to BETA.
A (input/output) COMPLEX*16 array, dimension (LDA,N)
On entry, the m by n matrix A. On exit, A(i,j) = ALPHA, 1 <= i <= m, 1 <= j <= n, i.ne.j; A(i,i) = BETA , 1 <= i <= min(m,n)
LDA (input) INTEGER
The leading dimension of the array A. LDA >= max(1,M).

Pages related to zlaset

  • zlaset (3)
  • zlascl (l) - multiplies the M by N complex matrix A by the real scalar CTO/CFROM
  • zlascl2 (l) - performs a diagonal scaling on a vector
  • zlasr (l) - applies a sequence of real plane rotations to a complex matrix A, from either the left or the right
  • zlassq (l) - returns the values scl and ssq such that ( scl**2 )*ssq = x( 1 )**2 +...+ x( n )**2 + ( scale**2 )*sumsq,
  • zlaswp (l) - performs a series of row interchanges on the matrix A
  • zlasyf (l) - computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method
  • zla_gbamv (l) - performs one of the matrix-vector operations y := alpha*abs(A)*abs(x) + beta*abs(y),