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IRIX 6.2 Development Libraries
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zlaset.z
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zlaset
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1996-03-14
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67 lines
ZZZZLLLLAAAASSSSEEEETTTT((((3333FFFF)))) ZZZZLLLLAAAASSSSEEEETTTT((((3333FFFF))))
NNNNAAAAMMMMEEEE
ZLASET - initialize a 2-D array A to BETA on the diagonal and ALPHA on
the offdiagonals
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
SUBROUTINE ZLASET( UPLO, M, N, ALPHA, BETA, A, LDA )
CHARACTER UPLO
INTEGER LDA, M, N
COMPLEX*16 ALPHA, BETA
COMPLEX*16 A( LDA, * )
PPPPUUUURRRRPPPPOOOOSSSSEEEE
ZLASET initializes a 2-D array A to BETA on the diagonal and ALPHA on the
offdiagonals.
AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
UPLO (input) 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.
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).
PPPPaaaaggggeeee 1111