LAPACK
3.4.2
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  zlaset (UPLO, M, N, ALPHA, BETA, A, LDA) 
ZLASET initializes the offdiagonal elements and the diagonal elements of a matrix to given values. 
subroutine zlaset  (  character  UPLO, 
integer  M,  
integer  N,  
complex*16  ALPHA,  
complex*16  BETA,  
complex*16, dimension( lda, * )  A,  
integer  LDA  
) 
ZLASET initializes the offdiagonal elements and the diagonal elements of a matrix to given values.
Download ZLASET + dependencies [TGZ] [ZIP] [TXT]ZLASET initializes a 2D array A to BETA on the diagonal and ALPHA on the offdiagonals.
[in]  UPLO  UPLO is CHARACTER*1 Specifies the part of the matrix A to be set. = 'U': Upper triangular part is set. The lower triangle is unchanged. = 'L': Lower triangular part is set. The upper triangle is unchanged. Otherwise: All of the matrix A is set. 
[in]  M  M is INTEGER On entry, M specifies the number of rows of A. 
[in]  N  N is INTEGER On entry, N specifies the number of columns of A. 
[in]  ALPHA  ALPHA is COMPLEX*16 All the offdiagonal array elements are set to ALPHA. 
[in]  BETA  BETA is COMPLEX*16 All the diagonal array elements are set to BETA. 
[in,out]  A  A is 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) 
[in]  LDA  LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M). 
Definition at line 107 of file zlaset.f.