Visible to Intel only — GUID: GUID-99363CCB-9A6A-4BBD-88EF-3F441B10FDF5
Visible to Intel only — GUID: GUID-99363CCB-9A6A-4BBD-88EF-3F441B10FDF5
?laset
Initializes the off-diagonal elements and the diagonal elements of a matrix to given values.
call slaset( uplo, m, n, alpha, beta, a, lda )
call dlaset( uplo, m, n, alpha, beta, a, lda )
call claset( uplo, m, n, alpha, beta, a, lda )
call zlaset( uplo, m, n, alpha, beta, a, lda )
- mkl.fi
The routine initializes an m-by-n matrix A to beta on the diagonal and alpha on the off-diagonals.
The data types are given for the Fortran interface.
- uplo
-
CHARACTER*1. Specifies the part of the matrix A to be set.
If uplo = 'U', upper triangular part is set; the strictly lower triangular part of A is not changed.
If uplo = 'L': lower triangular part is set; the strictly upper triangular part of A is not changed.
Otherwise: All of the matrix A is set.
- m
-
INTEGER. The number of rows of the matrix A. m≥ 0.
- n
-
INTEGER. The number of columns of the matrix A.
n≥ 0.
- alpha, beta
-
REAL for slaset
DOUBLE PRECISION for dlaset
COMPLEX for claset
DOUBLE COMPLEX for zlaset.
The constants to which the off-diagonal and diagonal elements are to be set, respectively.
- a
-
REAL for slaset
DOUBLE PRECISION for dlaset
COMPLEX for claset
DOUBLE COMPLEX for zlaset.
Array, DIMENSION (lda, n).
The array a contains the m-by-n matrix A.
- lda
-
INTEGER. The leading dimension of the array a.
lda≥ max(1,m).
- a
-
On exit, the leading m-by-n submatrix of A is set as follows:
if uplo = 'U', Aij = alpha, 1≤i≤j-1, 1≤j≤n,
if uplo = 'L', Aij = alpha, j+1≤i≤m, 1≤j≤n,
otherwise, Aij = alpha, 1≤i≤m, 1≤j≤n, i≠j,
and, for all uplo, Aii = beta, 1≤i≤min(m, n).